fix(tolerance): complete workflow integration

Sync current main and companion codec changes before preserving unsupported frame rows, rendering in the entity plane, and sharing final layout metrics with placement preview.

src/app/automation.rs

@@ -193,6 +193,17 @@ fn entity_json(e: &acadrust::EntityType) -> Value {
 impl OpenCADStudio {
     /// Handle one JSON request line and return the JSON response.
     pub(crate) fn automation_op(&mut self, line: &str) -> Value {
+        let res = self.automation_op_inner(line);
+        // Most automation ops mutate `Scene::selected` directly rather than
+        // going through `update()` (`select` calls `deselect_all` /
+        // `select_entity`, and `run` can erase the selected entities), so the
+        // selection check has to run on this path too.
+        #[cfg(not(target_arch = "wasm32"))]
+        self.notify_plugins_selection_changed();
+        res
+    }
+
+    fn automation_op_inner(&mut self, line: &str) -> Value {
         let req: Value = match serde_json::from_str(line) {
             Ok(v) => v,
             Err(e) => return err(format!("invalid JSON: {e}")),
@@ -201,6 +212,7 @@ impl OpenCADStudio {
             "new" => {
                 let i = self.active_tab;
                 self.tabs[i].scene.document = acadrust::CadDocument::new();
+                self.tabs[i].scene.deselect_all();
                 self.tabs[i].current_path = None;
                 // The headless session starts on the welcome (Start) tab, which
                 // blocks drawing commands; turn it into a real drawing.
@@ -224,6 +236,7 @@ impl OpenCADStudio {
                     Ok(doc) => {
                         let i = self.active_tab;
                         self.tabs[i].scene.document = doc;
+                        self.tabs[i].scene.deselect_all();
                         crate::app::style_ops::ensure_standard_styles(
                             &mut self.tabs[i].scene.document,
                         );

src/app/command_driver.rs

@@ -3716,10 +3716,11 @@ impl OpenCADStudio {
                 handle,
                 initial,
                 height,
+                template,
             } => {
                 self.tabs[i].active_cmd = None;
                 self.tabs[i].snap_result = None;
-                self.open_mtext_editor(pos, handle, &initial, height);
+                self.open_mtext_editor(pos, handle, &initial, height, template.map(|m| *m));
             }
             CmdResult::SuspendForMTextInput {
                 pos,
@@ -3732,7 +3733,7 @@ impl OpenCADStudio {
                 self.restore_pre_cmd_tangent();
                 self.command_mtext_input = true;
                 self.pending_command_editor_text = None;
-                self.open_mtext_editor(pos, None, &initial, height);
+                self.open_mtext_editor(pos, None, &initial, height, None);
             }
             CmdResult::OpenTextEditor {
                 pos,
@@ -3748,6 +3749,22 @@ impl OpenCADStudio {
                     &initial,
                     height,
                     super::text_inline::TextEntityField::Text,
+                    None,
+                );
+            }
+            CmdResult::SuspendForTextInput { pos, entity } => {
+                self.tabs[i].suspended_cmd = self.tabs[i].active_cmd.take();
+                self.tabs[i].snap_result = None;
+                self.tabs[i].scene.clear_preview_wire();
+                self.restore_pre_cmd_tangent();
+                let height = entity.height;
+                self.open_text_inline(
+                    pos,
+                    None,
+                    "",
+                    height,
+                    super::text_inline::TextEntityField::Text,
+                    Some(entity),
                 );
             }
             CmdResult::EditTextEntity { handle } => {

src/app/commands/draw.rs

@@ -1268,11 +1268,16 @@ impl OpenCADStudio {
             // ── Annotate commands ──────────────────────────────────────────
             "TEXT" => {
                 use crate::modules::annotate::text::TextCommand;
-                let height = crate::scene::creation_style::current_text_defaults(
-                    &self.tabs[i].scene.document,
-                )
-                .height;
-                let new_cmd = TextCommand::with_height(height);
+                let (defaults, styles, annotation_multiplier) = {
+                    let scene = &self.tabs[i].scene;
+                    let annotation_multiplier = scene.creation_annotation_multiplier();
+                    let defaults =
+                        crate::scene::creation_style::current_text_defaults(&scene.document);
+                    let styles = scene.document.text_styles.iter().cloned().collect();
+                    (defaults, styles, annotation_multiplier)
+                };
+                let new_cmd =
+                    TextCommand::with_defaults(defaults, styles, annotation_multiplier);
                 self.command_line.push_info(&new_cmd.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(new_cmd));
             }
@@ -1307,7 +1312,13 @@ impl OpenCADStudio {
                     &self.tabs[i].scene.document,
                 )
                 .height;
-                let new_cmd = MTextCommand::with_height(height);
+                let style = self.tabs[i]
+                    .scene
+                    .document
+                    .header
+                    .current_text_style_name
+                    .clone();
+                let new_cmd = MTextCommand::with_defaults(height, style);
                 self.command_line.push_info(&new_cmd.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(new_cmd));
             }

src/app/commands/inquiry.rs

@@ -943,7 +943,12 @@ impl OpenCADStudio {
 
             "ALIGN" => {
                 use crate::modules::draw::modify::align::AlignCommand;
-                let cmd = AlignCommand::new();
+
+                let selected: Vec<acadrust::Handle> =
+                    self.tabs[i].scene.selected.iter().copied().collect();
+
+                let cmd = AlignCommand::with_selection(selected);
+
                 self.command_line.push_info(&cmd.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(cmd));
             }

src/app/commands/layers.rs

@@ -827,30 +827,8 @@ impl OpenCADStudio {
             }
         }
 
-        // A viewport frames the model, so its framing is measured in model
-        // units and has to follow them. Left alone, every layout would suddenly
-        // look at a region a thousand times too large. The paper side of the
-        // ratio is untouched — the sheet is still the same sheet — so the ratio
-        // itself moves the other way.
-        //
-        // `transform_viewport` covers the rectangle and the target but not the
-        // framing, so the framing is done here for every viewport, and the
-        // target only for the ones the scale above did not already reach.
-        // Not every viewport frames the model, though. Each layout's sheet
-        // viewport frames the sheet — its view is the paper, measured in paper
-        // units — so scaling it by the model's factor would leave the drawing
-        // frame the same size as before while the view of it changed by a
-        // thousand, which is the boundary appearing to break.
-        let sheets: std::collections::HashSet<acadrust::Handle> = self.tabs[i]
-            .scene
-            .document
-            .objects
-            .values()
-            .filter_map(|object| match object {
-                acadrust::objects::ObjectType::Layout(layout) => Some(layout.viewport),
-                _ => None,
-            })
-            .collect();
+        // Model framing follows model units; sheet framing stays in paper units.
+        let sheets = self.tabs[i].scene.sheet_viewport_handles();
         let scaled: std::collections::HashSet<acadrust::Handle> = handles.iter().copied().collect();
         let mut reframed = 0usize;
         for entity in self.tabs[i].scene.document.entities_mut() {
@@ -858,14 +836,7 @@ impl OpenCADStudio {
             let acadrust::entities::EntityType::Viewport(vp) = entity else {
                 continue;
             };
-            // Only a paper-space viewport can be a sheet — the scale above
-            // reached everything in model space, and what it reached frames the
-            // model by definition. Among the rest, the layout names its sheet
-            // outright, and a file that arrives without that link still gives
-            // itself away by sitting at the paper origin, where only the sheet
-            // sits.
-            let is_sheet = !scaled.contains(&handle)
-                && (sheets.contains(&handle) || !crate::scene::Scene::is_content_viewport(vp));
+            let is_sheet = !scaled.contains(&handle) && sheets.contains(&handle);
             if is_sheet {
                 continue;
             }

src/app/mod.rs

@@ -694,6 +694,10 @@ pub(super) struct OpenCADStudio {
     /// keep their manifest listed but drop their ribbon tab and command
     /// dispatch. Persisted via [`settings::UserSettings::disabled_plugins`].
     disabled_plugins: rustc_hash::FxHashSet<String>,
+    /// `(tab id, selection fingerprint)` last broadcast to V4 plugins, so
+    /// `SelectionChangedV4` fires once per real change rather than per message.
+    #[cfg(not(target_arch = "wasm32"))]
+    last_plugin_selection: Option<(u64, u64)>,
     /// External add-on packages found in the plugins folder, refreshed when the
     /// Plugin Manager opens.
     external_plugins: Vec<crate::plugin::external::ExternalPlugin>,
@@ -2667,6 +2671,31 @@ pub enum Message {
     MTextWidth(String),
     /// Toolbar character-spacing field changed.
     MTextCharSpace(String),
+    /// Undo / redo editor text and inline-format operations.
+    MTextUndo,
+    MTextRedo,
+    /// Convert the selected numerator/separator/denominator to a stacked run.
+    MTextStack,
+    /// Remove inline character formatting from the selection (or all text).
+    MTextClearFormatting,
+    /// Insert a predefined symbol or field token at the caret.
+    MTextInsert(String),
+    /// Per-object annotation flag edited from the text toolbar.
+    MTextAnnotative(bool),
+    /// Column layout controls.
+    MTextColumnMode(String),
+    MTextColumnCount(String),
+    MTextColumnWidth(String),
+    MTextColumnGutter(String),
+    MTextColumnHeight(String),
+    MTextColumnFlowReversed(bool),
+    /// Paragraph indent/spacing controls.
+    MTextParagraphNumber(mtext_editor::ParaNumber, String),
+    MTextFindText(String),
+    MTextReplaceText(String),
+    MTextFindNext,
+    MTextReplaceNext,
+    MTextReplaceAll,
     /// Toolbar colour picker (same widget as Properties) — applies to the
     /// selection, or the whole text when nothing is selected.
     MTextColorChanged(AcadColor),
@@ -3259,6 +3288,8 @@ impl OpenCADStudio {
             attr_editor_tab: crate::ui::window::attribute_editor::AttrTab::Attribute,
             attr_editor_selected: 0,
             disabled_plugins: rustc_hash::FxHashSet::default(),
+            #[cfg(not(target_arch = "wasm32"))]
+            last_plugin_selection: None,
             external_plugins: Vec::new(),
             loaded_plugin_ids: rustc_hash::FxHashSet::default(),
             plugin_load_errors: rustc_hash::FxHashMap::default(),

src/app/mtext_editor.rs

@@ -8,7 +8,7 @@
 use acadrust::entities::mtext::AttachmentPoint;
 use acadrust::entities::mtext_format::{
     parse_mtext, MTextColor, MTextDocument, MTextFont, MTextParagraph, MTextParagraphAlignment,
-    MTextSpan, ParagraphProperties, SpanProperties, StackingData, StackingType,
+    MTextScalar, MTextSpan, ParagraphProperties, SpanProperties, StackingData, StackingType,
 };
 use acadrust::types::Vector3;
 use acadrust::{EntityType, Handle, MText};
@@ -38,6 +38,15 @@ pub enum ParaAlign {
     Justify,
 }
 
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum ParaNumber {
+    FirstIndent,
+    LeftIndent,
+    RightIndent,
+    SpaceBefore,
+    SpaceAfter,
+}
+
 /// `pick_list`-friendly wrapper for the 9 attachment points.
 #[derive(Clone, Copy, PartialEq, Eq)]
 pub struct JustifyChoice(pub AttachmentPoint);
@@ -107,6 +116,23 @@ pub struct MTextEditorState {
     /// it is NOT derived from the typed content, so adding characters wraps
     /// to the next line instead of stretching the box into one long line.
     pub rect_width: f64,
+    pub rect_height: String,
+    pub annotative: bool,
+    pub column_type: i16,
+    pub column_count: String,
+    pub column_auto_height: bool,
+    pub column_flow_reversed: bool,
+    pub column_width: String,
+    pub column_gutter: String,
+    pub paragraph_first_indent: String,
+    pub paragraph_left_indent: String,
+    pub paragraph_right_indent: String,
+    pub paragraph_space_before: String,
+    pub paragraph_space_after: String,
+    pub find_text: String,
+    pub replace_text: String,
+    undo: Vec<String>,
+    redo: Vec<String>,
     /// `Some` when editing an existing entity; `None` for a fresh MText.
     pub editing: Option<Handle>,
     /// When true the panel shows the rendered preview; when false the raw
@@ -167,6 +193,23 @@ impl MTextEditorState {
             // Default box ~20 characters wide; overwritten with the entity's
             // own width when editing an existing MText.
             rect_width: (height * 20.0).max(1.0),
+            rect_height: "0".to_string(),
+            annotative: false,
+            column_type: 0,
+            column_count: "2".to_string(),
+            column_auto_height: false,
+            column_flow_reversed: false,
+            column_width: (height * 10.0).to_string(),
+            column_gutter: (height * 5.0).to_string(),
+            paragraph_first_indent: "0".to_string(),
+            paragraph_left_indent: "0".to_string(),
+            paragraph_right_indent: "0".to_string(),
+            paragraph_space_before: "0".to_string(),
+            paragraph_space_after: "0".to_string(),
+            find_text: String::new(),
+            replace_text: String::new(),
+            undo: Vec::new(),
+            redo: Vec::new(),
             editing,
             screen_anchor: iced::Point::new(60.0, 90.0),
             original: None,
@@ -274,8 +317,54 @@ impl MTextEditorState {
         mt.attachment_point = self.attachment;
         mt.line_spacing_factor = self.line_spacing as f64;
         mt.style = self.style.clone();
+        mt.is_annotative = self.annotative;
+        let rectangle_height = self.rect_height.trim().parse::<f64>().unwrap_or(0.0);
+        mt.rectangle_height = (rectangle_height > 0.0).then_some(rectangle_height);
+        mt.column_data.column_type = self.column_type;
+        if self.column_type == 0 {
+            mt.column_data.column_count = 0;
+            mt.column_data.heights.clear();
+        } else {
+            mt.column_data.column_count = crate::entities::text_support::clamp_mtext_column_count(
+                self.column_count
+                    .trim()
+                    .parse::<i32>()
+                    .ok()
+                    .filter(|count| *count > 0)
+                    .unwrap_or(1),
+            );
+            mt.column_data.auto_height = self.column_auto_height;
+            mt.column_data.flow_reversed = self.column_flow_reversed;
+            if let Ok(width) = self.column_width.trim().parse::<f64>() {
+                if width > 0.0 {
+                    mt.column_data.width = width;
+                }
+            }
+            if let Ok(gutter) = self.column_gutter.trim().parse::<f64>() {
+                if gutter >= 0.0 {
+                    mt.column_data.gutter = gutter;
+                }
+            }
+            if !self.column_auto_height && rectangle_height > 0.0 {
+                mt.column_data.heights = vec![
+                    rectangle_height;
+                    mt.column_data.column_count as usize
+                ];
+            }
+        }
         mt
     }
+
+    fn record_undo(&mut self) {
+        let value = self.content.text();
+        if self.undo.last().is_none_or(|last| last != &value) {
+            self.undo.push(value);
+            if self.undo.len() > 100 {
+                self.undo.remove(0);
+            }
+        }
+        self.redo.clear();
+    }
 }
 
 /// Parse a numeric field, returning `Some(v)` only when it differs from the
@@ -595,6 +684,27 @@ fn vertical_caret_target(
     best.1
 }
 
+fn seed_mtext_state(state: &mut MTextEditorState, m: &MText) {
+    state.attachment = m.attachment_point;
+    state.line_spacing = m.line_spacing_factor as f32;
+    state.rect_width = m.rectangle_width.max(0.0);
+    state.rect_height = m.rectangle_height.unwrap_or(0.0).max(0.0).to_string();
+    state.annotative = m.is_annotative;
+    state.column_type = m.column_data.column_type;
+    state.column_count = crate::entities::text_support::clamp_mtext_column_count(
+        m.column_data.column_count,
+    )
+    .to_string();
+    state.column_auto_height = m.column_data.auto_height;
+    state.column_flow_reversed = m.column_data.flow_reversed;
+    state.column_width = m.column_data.width.max(0.0).to_string();
+    state.column_gutter = m.column_data.gutter.max(0.0).to_string();
+    if !m.style.trim().is_empty() {
+        state.style = m.style.clone();
+    }
+    state.original = Some(m.clone());
+}
+
 impl super::OpenCADStudio {
     /// Open the in-place editor for a new (`handle = None`) or existing MText.
     /// Open the rich MText editor for a new or existing MText / MultiLeader.
@@ -605,6 +715,7 @@ impl super::OpenCADStudio {
         handle: Option<Handle>,
         initial: &str,
         height: f64,
+        template: Option<MText>,
     ) {
         if handle.is_some_and(|h| self.tabs[self.active_tab].scene.is_layer_locked(h)) {
             return;
@@ -614,20 +725,11 @@ impl super::OpenCADStudio {
             state.screen_anchor = p;
         }
         // Seed attachment / line-spacing / box width from the entity being edited.
+        let has_template = template.is_some();
         if let Some(h) = handle {
             match self.tabs[self.active_tab].scene.document.get_entity(h) {
                 Some(EntityType::MText(m)) => {
-                    state.attachment = m.attachment_point;
-                    state.line_spacing = m.line_spacing_factor as f32;
-                    if !m.style.trim().is_empty() {
-                        state.style = m.style.clone();
-                    }
-                    if m.rectangle_width > 0.0 {
-                        state.rect_width = m.rectangle_width;
-                    }
-                    // Keep the whole entity so `build_mtext` preserves the fields
-                    // the toolbar can't edit (columns, rotation, background…).
-                    state.original = Some(m.clone());
+                    seed_mtext_state(&mut state, m);
                 }
                 Some(EntityType::MultiLeader(ml)) => {
                     state.line_spacing = ml.context.line_spacing_factor as f32;
@@ -637,6 +739,8 @@ impl super::OpenCADStudio {
                 }
                 _ => {}
             }
+        } else if let Some(m) = template {
+            seed_mtext_state(&mut state, &m);
         } else {
             // New MText inherits the document's current text style (STYLE),
             // not the "Standard" default. See #92.
@@ -659,7 +763,7 @@ impl super::OpenCADStudio {
         // The preview uses a fixed on-screen text size. Therefore the initial
         // wrap width is the drawing-unit span that exactly reaches the right
         // edge of the editor, placing both ruler and slider at their maximum.
-        if handle.is_none() {
+        if handle.is_none() && !has_template {
             let initial_width = self.mtext_editor.as_ref().map(|ed| {
                 super::view::overlay::MTEXT_EDITOR_WRITING_WIDTH / ed.preview_scale()
             });
@@ -746,6 +850,322 @@ impl super::OpenCADStudio {
     /// Splice text around the preview selection (visible-char range) in the
     /// raw value. `case` optionally transforms the selected slice. Returns
     /// true when a preview selection was present and applied.
+    pub(super) fn mtext_undo(&mut self) {
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            if let Some(previous) = ed.undo.pop() {
+                ed.redo.push(ed.content.text());
+                ed.content = text_editor::Content::with_text(&previous);
+                ed.caret = previous.chars().count();
+                ed.sel = Some((ed.caret, ed.caret));
+                ed.sel_anchor = ed.caret;
+            }
+        }
+        self.rebuild_mtext_preview();
+    }
+
+    pub(super) fn mtext_redo(&mut self) {
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            if let Some(next) = ed.redo.pop() {
+                ed.undo.push(ed.content.text());
+                ed.content = text_editor::Content::with_text(&next);
+                ed.caret = next.chars().count();
+                ed.sel = Some((ed.caret, ed.caret));
+                ed.sel_anchor = ed.caret;
+            }
+        }
+        self.rebuild_mtext_preview();
+    }
+
+    pub(super) fn mtext_apply_span_number(&mut self, field: &'static str, value: String) {
+        let Some(number) = value.trim().replace(',', ".").parse::<f64>().ok() else {
+            return;
+        };
+        let valid = match field {
+            "height" => number > 0.0,
+            "oblique" => (-85.0..=85.0).contains(&number),
+            "width" => number > 0.0,
+            "tracking" => number.is_finite(),
+            _ => false,
+        };
+        if !valid {
+            return;
+        }
+        let has_selection = self
+            .mtext_editor
+            .as_ref()
+            .and_then(|editor| editor.sel)
+            .is_some_and(|(start, end)| start < end);
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            if has_selection {
+                let (start, end) = ed.sel.unwrap();
+                ed.record_undo();
+                let para0 = doc_para0(&ed.doc);
+                let mut cells = doc_to_cells(&ed.doc);
+                let end = end.min(cells.len());
+                for cell in &mut cells[start.min(end)..end] {
+                    if let Cell::Char(_, props) | Cell::Stack { props, .. } = cell {
+                        match field {
+                            "height" => props.height = Some(MTextScalar::Absolute(number)),
+                            "oblique" => props.oblique_angle = (number != 0.0).then_some(number),
+                            "width" => props.width_factor = (number != 1.0).then_some(number),
+                            "tracking" => props.tracking = (number != 0.0).then_some(number),
+                            _ => {}
+                        }
+                    }
+                }
+                ed.content = text_editor::Content::with_text(
+                    &cells_to_doc(&para0, &cells).to_mtext_string(),
+                );
+                ed.sel = Some((start, end));
+                ed.caret = end;
+            } else {
+                match field {
+                    "height" => ed.height = value,
+                    "oblique" => ed.oblique = value,
+                    "width" => ed.width = value,
+                    "tracking" => ed.char_space = value,
+                    _ => {}
+                }
+            }
+        }
+        self.rebuild_mtext_preview();
+    }
+
+    pub(super) fn mtext_apply_paragraph_number(&mut self, field: ParaNumber, value: String) {
+        let Some(number) = value.trim().replace(',', ".").parse::<f64>().ok() else {
+            return;
+        };
+        if !number.is_finite() {
+            return;
+        }
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            ed.record_undo();
+            match field {
+                ParaNumber::FirstIndent => ed.paragraph_first_indent = value,
+                ParaNumber::LeftIndent => ed.paragraph_left_indent = value,
+                ParaNumber::RightIndent => ed.paragraph_right_indent = value,
+                ParaNumber::SpaceBefore => ed.paragraph_space_before = value,
+                ParaNumber::SpaceAfter => ed.paragraph_space_after = value,
+            }
+            let para0 = doc_para0(&ed.doc);
+            let cells = doc_to_cells(&ed.doc);
+            let (start, end) = ed
+                .sel
+                .filter(|(start, end)| start < end)
+                .unwrap_or((ed.caret, ed.caret));
+            let paragraph_of = |index: usize| {
+                cells
+                    .iter()
+                    .take(index.min(cells.len()))
+                    .filter(|cell| matches!(cell, Cell::Break(..)))
+                    .count()
+            };
+            let first = paragraph_of(start);
+            let last = paragraph_of(end.saturating_sub((end > start) as usize));
+            let mut doc = cells_to_doc(&para0, &cells);
+            for paragraph in doc
+                .paragraphs
+                .iter_mut()
+                .skip(first)
+                .take(last.saturating_sub(first) + 1)
+            {
+                let optional = (number != 0.0).then_some(number);
+                match field {
+                    ParaNumber::FirstIndent => paragraph.properties.first_line_indent = optional,
+                    ParaNumber::LeftIndent => paragraph.properties.left_margin = optional,
+                    ParaNumber::RightIndent => paragraph.properties.right_margin = optional,
+                    ParaNumber::SpaceBefore => paragraph.properties.spacing_before = optional,
+                    ParaNumber::SpaceAfter => paragraph.properties.spacing_after = optional,
+                }
+            }
+            ed.content = text_editor::Content::with_text(&doc.to_mtext_string());
+        }
+        self.rebuild_mtext_preview();
+    }
+
+    pub(super) fn mtext_stack_selection(&mut self) {
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            let Some((start, end)) = ed.sel.filter(|(start, end)| start < end) else {
+                return;
+            };
+            let para0 = doc_para0(&ed.doc);
+            let mut cells = doc_to_cells(&ed.doc);
+            let end = end.min(cells.len());
+            let plain = cells_to_doc(&ParagraphProperties::default(), &cells[start..end])
+                .to_plain_text();
+            let Some((split, separator)) = plain
+                .char_indices()
+                .find(|(_, ch)| matches!(ch, '/' | '#' | '^'))
+            else {
+                return;
+            };
+            let separator_len = separator.len_utf8();
+            let data = StackingData {
+                numerator: plain[..split].to_string(),
+                denominator: plain[split + separator_len..].to_string(),
+                stacking_type: StackingType::from_char(separator),
+            };
+            if data.numerator.is_empty() || data.denominator.is_empty() {
+                return;
+            }
+            let props = cells[start..end]
+                .iter()
+                .find_map(|cell| match cell {
+                    Cell::Char(_, props) | Cell::Stack { props, .. } => Some(props.clone()),
+                    Cell::Break(..) => None,
+                })
+                .unwrap_or_default();
+            ed.record_undo();
+            let replacement = flatten_stack(&data)
+                .chars()
+                .enumerate()
+                .map(|(index, _)| Cell::Stack {
+                    data: data.clone(),
+                    props: props.clone(),
+                    head: index == 0,
+                })
+                .collect::<Vec<_>>();
+            let replacement_len = replacement.len();
+            cells.splice(start..end, replacement);
+            let new_end = start + replacement_len;
+            ed.content = text_editor::Content::with_text(
+                &cells_to_doc(&para0, &cells).to_mtext_string(),
+            );
+            ed.sel = Some((start, new_end));
+            ed.caret = new_end;
+            ed.sel_anchor = start;
+        }
+        self.rebuild_mtext_preview();
+    }
+
+    pub(super) fn mtext_clear_formatting(&mut self) {
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            let para0 = doc_para0(&ed.doc);
+            let mut cells = doc_to_cells(&ed.doc);
+            let (start, end) = ed
+                .sel
+                .filter(|(start, end)| start < end)
+                .unwrap_or((0, cells.len()));
+            let end = end.min(cells.len());
+            ed.record_undo();
+            for cell in &mut cells[start.min(end)..end] {
+                if let Cell::Char(_, props) | Cell::Stack { props, .. } = cell {
+                    *props = SpanProperties::default();
+                }
+            }
+            ed.content = text_editor::Content::with_text(
+                &cells_to_doc(&para0, &cells).to_mtext_string(),
+            );
+            ed.sel = Some((start, end));
+            ed.caret = end;
+        }
+        self.rebuild_mtext_preview();
+    }
+
+    pub(super) fn mtext_find_next(&mut self) {
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            let needle: Vec<char> = ed.find_text.chars().collect();
+            if needle.is_empty() {
+                return;
+            }
+            let cells = doc_to_cells(&ed.doc);
+            let chars: Vec<Option<char>> = cells
+                .iter()
+                .map(|cell| match cell {
+                    Cell::Char(ch, _) => Some(*ch),
+                    Cell::Break(..) => Some('\n'),
+                    Cell::Stack { .. } => None,
+                })
+                .collect();
+            if needle.len() > chars.len() {
+                return;
+            }
+            let start = ed.caret.min(chars.len());
+            let last_start = chars.len() - needle.len();
+            let found = (start..=last_start)
+                .chain(0..start.min(last_start + 1))
+                .find(|index| {
+                    chars[*index..*index + needle.len()]
+                        .iter()
+                        .zip(&needle)
+                        .all(|(actual, expected)| actual == &Some(*expected))
+                });
+            if let Some(found) = found {
+                ed.sel_anchor = found;
+                ed.sel = Some((found, found + needle.len()));
+                ed.caret = found + needle.len();
+                ed.caret_blink_on = true;
+            }
+        }
+    }
+
+    pub(super) fn mtext_replace_next(&mut self) {
+        let replacement = self
+            .mtext_editor
+            .as_ref()
+            .map(|editor| editor.replace_text.clone())
+            .unwrap_or_default();
+        let matches = self.mtext_editor.as_ref().is_some_and(|editor| {
+            let Some((start, end)) = editor.sel.filter(|(start, end)| start < end) else {
+                return false;
+            };
+            let cells = doc_to_cells(&editor.doc);
+            cells_to_doc(
+                &ParagraphProperties::default(),
+                &cells[start.min(cells.len())..end.min(cells.len())],
+            )
+            .to_plain_text()
+                == editor.find_text
+        });
+        if matches {
+            self.mtext_type(&replacement);
+        }
+        self.mtext_find_next();
+    }
+
+    pub(super) fn mtext_replace_all(&mut self) {
+        if let Some(ed) = self.mtext_editor.as_mut() {
+            let needle: Vec<char> = ed.find_text.chars().collect();
+            if needle.is_empty() {
+                return;
+            }
+            let para0 = doc_para0(&ed.doc);
+            let mut cells = doc_to_cells(&ed.doc);
+            let replacement = ed.replace_text.clone();
+            let mut matches = Vec::new();
+            let mut index = 0usize;
+            while index + needle.len() <= cells.len() {
+                let found = cells[index..index + needle.len()]
+                    .iter()
+                    .zip(&needle)
+                    .all(|(cell, expected)| matches!(cell, Cell::Char(actual, _) if actual == expected));
+                if found {
+                    matches.push(index);
+                    index += needle.len();
+                } else {
+                    index += 1;
+                }
+            }
+            if matches.is_empty() {
+                return;
+            }
+            ed.record_undo();
+            for start in matches.into_iter().rev() {
+                let props = insert_props(&cells, start);
+                let paragraph = para_props_at(&para0, &cells, start);
+                let replacement_cells = str_to_cells(&replacement, &props, &paragraph);
+                cells.splice(start..start + needle.len(), replacement_cells);
+            }
+            ed.content = text_editor::Content::with_text(
+                &cells_to_doc(&para0, &cells).to_mtext_string(),
+            );
+            ed.caret = cells.len();
+            ed.sel = Some((ed.caret, ed.caret));
+            ed.sel_anchor = ed.caret;
+        }
+        self.rebuild_mtext_preview();
+    }
+
     /// Toggle a character format over the preview selection, on the structured
     /// span properties. The stroke-font renderer has no true bold, so Bold
     /// switches the run to the heavier "Gothic" face; Italic applies a 15°
@@ -798,6 +1218,7 @@ impl super::OpenCADStudio {
             if a >= b {
                 return;
             }
+            ed.record_undo();
             match kind {
                 MTextFmt::Underline => {
                     let on = !all_have(&cells[a..b], |p| p.underline());
@@ -882,6 +1303,7 @@ impl super::OpenCADStudio {
     /// Set the alignment of every paragraph the selection (or caret) touches.
     pub(super) fn mtext_apply_align(&mut self, align: ParaAlign) {
         if let Some(ed) = self.mtext_editor.as_mut() {
+            ed.record_undo();
             let para0 = doc_para0(&ed.doc);
             let cells = doc_to_cells(&ed.doc);
             let (a, b) = ed
@@ -933,6 +1355,7 @@ impl super::OpenCADStudio {
             s
         };
         if let Some(ed) = self.mtext_editor.as_mut() {
+            ed.record_undo();
             // Edit the structured document as a flat cell list, then serialize
             // it back into the raw content the preview/commit still read.
             let para0 = doc_para0(&ed.doc);
@@ -962,6 +1385,7 @@ impl super::OpenCADStudio {
     /// Delete the selection, or the visible character before the caret.
     pub(super) fn mtext_backspace(&mut self) {
         if let Some(ed) = self.mtext_editor.as_mut() {
+            ed.record_undo();
             let para0 = doc_para0(&ed.doc);
             let mut cells = doc_to_cells(&ed.doc);
             let count = cells.len();
@@ -985,6 +1409,7 @@ impl super::OpenCADStudio {
     /// Delete the selection, or the visible character at the caret.
     pub(super) fn mtext_delete(&mut self) {
         if let Some(ed) = self.mtext_editor.as_mut() {
+            ed.record_undo();
             let para0 = doc_para0(&ed.doc);
             let mut cells = doc_to_cells(&ed.doc);
             let count = cells.len();
@@ -1104,6 +1529,7 @@ impl super::OpenCADStudio {
                 let mut cells = doc_to_cells(&ed.doc);
                 let b = b.min(cells.len());
                 if a < b {
+                    ed.record_undo();
                     for c in &mut cells[a..b] {
                         if let Cell::Char(_, p) | Cell::Stack { props: p, .. } = c {
                             let (bold, italic) = p
@@ -1155,6 +1581,7 @@ impl super::OpenCADStudio {
                 let mut cells = doc_to_cells(&ed.doc);
                 let b = b.min(cells.len());
                 if a < b {
+                    ed.record_undo();
                     for c in &mut cells[a..b] {
                         if let Cell::Char(_, p) | Cell::Stack { props: p, .. } = c {
                             p.color = mcolor.clone();
@@ -1217,7 +1644,8 @@ impl super::OpenCADStudio {
         }
         let body_empty = ed.content.text().trim().is_empty();
         let mut mt = ed.build_mtext();
-        let annotative = ed.editing.is_none()
+        let annotative = mt.is_annotative
+            || ed.editing.is_none()
             && crate::scene::annotative::text_style_is_annotative(
                 &self.tabs[i].scene.document,
                 &mt.style,
@@ -1240,9 +1668,12 @@ impl super::OpenCADStudio {
                 Some(EntityType::MText(t)) => {
                     t.value = mt.value;
                     t.height = mt.height;
+                    t.style = mt.style;
                     t.attachment_point = mt.attachment_point;
                     t.line_spacing_factor = mt.line_spacing_factor;
                     t.rectangle_width = mt.rectangle_width;
+                    t.rectangle_height = mt.rectangle_height;
+                    t.column_data = mt.column_data;
                 }
                 Some(EntityType::MultiLeader(ml)) => {
                     ml.context.text_string = mt.value;
@@ -1255,9 +1686,25 @@ impl super::OpenCADStudio {
                 _ => {}
             }
             // Keep the displayed annotation context in sync.
+            if matches!(self.tabs[i].scene.document.get_entity(h), Some(EntityType::MText(_))) {
+                crate::scene::annotative::set_entity_annotative(
+                    &mut self.tabs[i].scene.document,
+                    h,
+                    annotative,
+                );
+                if annotative {
+                    if let Some(scale) = self.tabs[i].scene.current_annotation_scale_handle() {
+                        crate::scene::annotative::create_annotation_context(
+                            &mut self.tabs[i].scene.document,
+                            h,
+                            scale,
+                        );
+                    }
+                }
+            }
             if matches!(
                 self.tabs[i].scene.document.get_entity(h),
-                Some(EntityType::MultiLeader(_))
+                Some(EntityType::MText(_) | EntityType::MultiLeader(_))
             ) {
                 self.tabs[i]
                     .scene
@@ -1283,7 +1730,6 @@ impl super::OpenCADStudio {
                 position.y,
                 position.z,
             );
-            mt.rotation = 0.0;
             self.push_undo_snapshot(i, "MTEXT");
             let handle = self.commit_entity_handle(plane.place_entity(EntityType::MText(mt)));
             if annotative {
@@ -1321,7 +1767,8 @@ impl super::OpenCADStudio {
             ),
             None => return,
         };
-        let annotative = editing.is_none()
+        let annotative = mt.is_annotative
+            || editing.is_none()
             && crate::scene::annotative::text_style_is_annotative(
                 &self.tabs[i].scene.document,
                 &mt.style,
@@ -1341,9 +1788,12 @@ impl super::OpenCADStudio {
                 Some(EntityType::MText(t)) => {
                     t.value = mt.value;
                     t.height = mt.height;
+                    t.style = mt.style;
                     t.attachment_point = mt.attachment_point;
                     t.line_spacing_factor = mt.line_spacing_factor;
                     t.rectangle_width = mt.rectangle_width;
+                    t.rectangle_height = mt.rectangle_height;
+                    t.column_data = mt.column_data;
                 }
                 Some(EntityType::MultiLeader(ml)) => {
                     ml.context.text_string = mt.value;
@@ -1355,9 +1805,25 @@ impl super::OpenCADStudio {
                 }
                 _ => {}
             }
+            if matches!(self.tabs[i].scene.document.get_entity(h), Some(EntityType::MText(_))) {
+                crate::scene::annotative::set_entity_annotative(
+                    &mut self.tabs[i].scene.document,
+                    h,
+                    annotative,
+                );
+                if annotative {
+                    if let Some(scale) = self.tabs[i].scene.current_annotation_scale_handle() {
+                        crate::scene::annotative::create_annotation_context(
+                            &mut self.tabs[i].scene.document,
+                            h,
+                            scale,
+                        );
+                    }
+                }
+            }
             if matches!(
                 self.tabs[i].scene.document.get_entity(h),
-                Some(EntityType::MultiLeader(_))
+                Some(EntityType::MText(_) | EntityType::MultiLeader(_))
             ) {
                 self.tabs[i]
                     .scene
@@ -1383,7 +1849,6 @@ impl super::OpenCADStudio {
                 position.y,
                 position.z,
             );
-            mt.rotation = 0.0;
             self.push_undo_snapshot(i, "MTEXT");
             let handle = self.commit_entity_handle(plane.place_entity(EntityType::MText(mt)));
             self.tabs[i].dirty = true;
@@ -1400,6 +1865,11 @@ impl super::OpenCADStudio {
             // Bind the editor to the fresh entity so the next Apply updates it.
             if let (Some(h), Some(ed)) = (handle, self.mtext_editor.as_mut()) {
                 ed.editing = Some(h);
+                if let Some(EntityType::MText(mtext)) =
+                    self.tabs[i].scene.document.get_entity(h)
+                {
+                    ed.original = Some(mtext.clone());
+                }
             }
         }
         self.refresh_properties();

src/app/properties.rs

@@ -1884,6 +1884,69 @@ impl OpenCADStudio {
                         }
                     }
 
+                    // Single-line text height rows depend on both the
+                    // justification and the active annotation scale. Aligned
+                    // text derives its paper height from the two endpoints,
+                    // while annotative text exposes that paper height and a
+                    // separate calculated model height.
+                    if let acadrust::EntityType::Text(text) = entity {
+                        let aligned = matches!(
+                            text.horizontal_alignment,
+                            acadrust::entities::TextHorizontalAlignment::Aligned
+                        );
+                        let annotative = crate::scene::annotative::is_annotative(doc, entity);
+                        let model_factor = if annotative {
+                            annotation_scale_handle
+                                .and_then(|handle| match doc.objects.get(&handle) {
+                                    Some(acadrust::objects::ObjectType::Scale(scale)) => Some(
+                                        scale.inverse_factor()
+                                            / self.tabs[i].scene.annotation_scale_unit_factor(),
+                                    ),
+                                    _ => None,
+                                })
+                                .unwrap_or(self.tabs[i].scene.annotation_scale as f64)
+                        } else {
+                            1.0
+                        };
+                        let paper_height = if aligned {
+                            crate::entities::text::text_run_placement_at_scale(
+                                text,
+                                doc,
+                                model_factor as f32,
+                            )
+                            .height as f64
+                        } else {
+                            text.height
+                        };
+                        for section in sections.iter_mut() {
+                            if let Some(row) =
+                                section.props.iter_mut().find(|row| row.field == "height")
+                            {
+                                if annotative {
+                                    row.label = t!("Paper text height").into_owned();
+                                }
+                                if aligned {
+                                    row.value = crate::scene::model::object::PropValue::ReadOnly(
+                                        crate::entities::common::format_length(paper_height),
+                                    );
+                                }
+                            }
+                        }
+                        if annotative {
+                            insert_row_after(
+                                &mut sections,
+                                "height",
+                                crate::entities::common::ro_prop(
+                                    t!("Model text height").as_ref(),
+                                    "model_text_height",
+                                    crate::entities::common::format_length(
+                                        paper_height * model_factor,
+                                    ),
+                                ),
+                            );
+                        }
+                    }
+
                     if !group_names.is_empty() {
                         let label = group_names.join(", ");
                         if let Some(general) = sections.first_mut() {

src/app/text_inline.rs

@@ -95,6 +95,9 @@ pub struct TextInlineState {
     pub editing: Option<Handle>,
     /// Which entity slot this session writes to on commit.
     pub field: TextEntityField,
+    /// Fully prepared entity supplied by the interactive TEXT command. Editing
+    /// existing text and legacy direct-open paths leave this empty.
+    pub creation: Option<Text>,
     /// Canvas-space anchor where the field is drawn (the insertion-point click).
     pub screen_anchor: iced::Point,
 }
@@ -173,10 +176,10 @@ impl super::OpenCADStudio {
         };
 
         if field.is_rich() {
-            self.open_mtext_editor(pos, Some(target), &value, height);
+            self.open_mtext_editor(pos, Some(target), &value, height, None);
             self.unfocus_widgets()
         } else {
-            self.open_text_inline(pos, Some(target), &value, height, field);
+            self.open_text_inline(pos, Some(target), &value, height, field, None);
             iced::widget::operation::focus(iced::widget::Id::new(super::view::TEXT_INLINE_ID))
         }
     }
@@ -190,6 +193,7 @@ impl super::OpenCADStudio {
         initial: &str,
         height: f64,
         field: TextEntityField,
+        creation: Option<Text>,
     ) {
         if handle.is_some_and(|h| self.tabs[self.active_tab].scene.is_layer_locked(h)) {
             return;
@@ -200,6 +204,7 @@ impl super::OpenCADStudio {
             height: if height > 0.0 { height } else { 0.25 },
             editing: handle,
             field,
+            creation,
             screen_anchor: iced::Point::new(60.0, 90.0),
         };
         if let Some(p) = self.tabs[self.active_tab].scene.selection.borrow().last_move_pos {
@@ -236,12 +241,18 @@ impl super::OpenCADStudio {
             } else {
                 crate::command::WorkingPlane::default()
             };
-            let position = plane.to_local(ed.pos);
-            let mut t = Text::with_value(
-                &ed.value,
-                Vector3::new(position.x, position.y, position.z),
-            )
-            .with_height(ed.height);
+            let command_creation = ed.creation.is_some();
+            let mut t = if let Some(mut prepared) = ed.creation {
+                prepared.value = ed.value.clone();
+                prepared
+            } else {
+                let position = plane.to_local(ed.pos);
+                Text::with_value(
+                    &ed.value,
+                    Vector3::new(position.x, position.y, position.z),
+                )
+                .with_height(ed.height)
+            };
             // New text inherits the document's current text style (STYLE), not
             // the entity default. See #92.
             let cur_style = self.tabs[i]
@@ -251,24 +262,48 @@ impl super::OpenCADStudio {
                 .current_text_style_name
                 .clone();
             if !cur_style.is_empty() {
-                t.style = cur_style;
-            }
-            let annotative = crate::scene::annotative::text_style_is_annotative(
-                &self.tabs[i].scene.document,
-                &t.style,
-            );
-            self.push_undo_snapshot(i, "TEXT");
-            let handle = self.commit_entity_handle(plane.place_entity(EntityType::Text(t)));
-            if annotative {
-                let scale = self.tabs[i].scene.current_annotation_scale_handle();
-                if let (Some(handle), Some(scale)) = (handle, scale) {
-                    crate::scene::annotative::create_annotation_context(
-                        &mut self.tabs[i].scene.document,
-                        handle,
-                        scale,
-                    );
+                if t.style.trim().is_empty() {
+                    t.style = cur_style;
                 }
             }
+            if command_creation {
+                let annotation_multiplier = if crate::scene::annotative::text_style_is_annotative(
+                    &self.tabs[i].scene.document,
+                    &t.style,
+                ) {
+                    self.tabs[i].scene.creation_annotation_multiplier()
+                } else {
+                    1.0
+                };
+                let display_height = crate::entities::text::text_run_placement_at_scale(
+                    &t,
+                    &self.tabs[i].scene.document,
+                    annotation_multiplier as f32,
+                )
+                .height as f64
+                    * annotation_multiplier;
+                if let Some(command) = self.tabs[i].suspended_cmd.as_mut() {
+                    command.on_editor_display_height(display_height);
+                }
+            }
+            self.push_undo_snapshot(i, "TEXT");
+            self.tabs[i].scene.document.header.current_text_style_name = t.style.clone();
+            let variable_height = self.tabs[i]
+                .scene
+                .document
+                .text_styles
+                .iter()
+                .find(|style| style.name.eq_ignore_ascii_case(&t.style))
+                .is_none_or(|style| style.height <= 1.0e-9);
+            if variable_height
+                && !matches!(
+                    t.horizontal_alignment,
+                    acadrust::entities::TextHorizontalAlignment::Aligned
+                )
+            {
+                self.tabs[i].scene.document.header.text_height = t.height;
+            }
+            let _ = self.commit_entity_handle(plane.place_entity(EntityType::Text(t)));
             self.tabs[i].dirty = true;
         }
         self.refresh_properties();

src/app/tolerance_dialog.rs

@@ -71,8 +71,28 @@ impl super::OpenCADStudio {
             return false;
         }
         let i = self.active_tab;
-        let mut command =
-            crate::modules::annotate::tolerance_cmd::ToleranceCommand::with_text(state.to_text());
+        let text = state.to_text();
+        let mut preview_entity = EntityType::Tolerance(
+            acadrust::entities::Tolerance::with_text(
+                acadrust::types::Vector3::ZERO,
+                text.clone(),
+            ),
+        );
+        crate::scene::creation_style::apply_current_creation_styles(
+            &self.tabs[i].scene.document,
+            &mut preview_entity,
+        );
+        let preview_strokes = match &preview_entity {
+            EntityType::Tolerance(tolerance) => crate::entities::tolerance::preview_strokes(
+                tolerance,
+                &self.tabs[i].scene.document,
+            ),
+            _ => Vec::new(),
+        };
+        let mut command = crate::modules::annotate::tolerance_cmd::ToleranceCommand::with_text(
+            text,
+            preview_strokes,
+        );
         use crate::command::CadCommand;
         let plane = if self.tabs[i].editing_model_space() {
             self.tabs[i].ucs_xform().working_plane()

src/app/update/command.rs

@@ -1162,6 +1162,7 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                 if matches!(
                     item.action,
                     GripMenuAction::Stretch
+                        | GripMenuAction::MoveWithText
                         | GripMenuAction::MoveWithDimLine
                         | GripMenuAction::MoveWithLeader
                         | GripMenuAction::MoveIndependent
@@ -1212,7 +1213,11 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                             {
                                 (crate::entities::multileader::MOVE_ALL_GRIP, true)
                             } else {
-                                (popup.grip_id, if is_dimension { false } else { g.is_midpoint })
+                                (
+                                    popup.grip_id,
+                                    matches!(item.action, GripMenuAction::MoveWithText)
+                                        || (!is_dimension && g.is_midpoint),
+                                )
                             };
                         self.tabs[i].active_grip = Some(GripEdit::single(
                             popup.handle,

src/app/update/file.rs

@@ -204,7 +204,14 @@ fn plot_scene_content(
                 || !crate::scene::Scene::handle_from_wire_name(&wire.name)
                     .and_then(|handle| scene.document.get_entity(handle))
                     .is_some_and(|entity| {
-                        matches!(entity, acadrust::EntityType::Viewport(viewport) if crate::scene::Scene::is_content_viewport(viewport))
+                        matches!(
+                            entity,
+                            acadrust::EntityType::Viewport(viewport)
+                                if !crate::scene::Scene::is_sheet_viewport(
+                                    &scene.document,
+                                    viewport,
+                                )
+                        )
                     }))
     });
     model_wires.retain(|wire| wire.plot_visible);

src/app/update/mod.rs

@@ -235,6 +235,25 @@ impl OpenCADStudio {
         }
     }
 
+    /// Emit `SelectionChangedV4` to V4 plugins when the active tab's selection
+    /// set actually changed since the last broadcast.
+    #[cfg(not(target_arch = "wasm32"))]
+    pub(super) fn notify_plugins_selection_changed(&mut self) {
+        if self.active_tab >= self.tabs.len() {
+            return;
+        }
+        let i = self.active_tab;
+        let tab_id = self.tabs[i].id;
+        let fingerprint = self.tabs[i].scene.selection_fingerprint();
+        let key = (tab_id, fingerprint);
+        if self.last_plugin_selection == Some(key) {
+            return;
+        }
+        self.last_plugin_selection = Some(key);
+        let handles = self.tabs[i].scene.selected_handles_in_order();
+        crate::plugin::v4_support::publish_selection_changed_v4(tab_id, handles);
+    }
+
     pub fn update(&mut self, msg: Message) -> Task<Message> {
         let perf_started = crate::perf::enabled().then(Instant::now);
         let perf_label = perf_message_label(&msg);
@@ -279,6 +298,11 @@ impl OpenCADStudio {
         // The block panel watches the drawing's block list and rebuilds its
         // thumbnails whenever the names change (BLOCK define, file open, …).
         self.refresh_block_palette_if_stale();
+        // Let V4 plugins observe selection changes that happened while handling
+        // this message (picking, window select, QSELECT, SELECTALL, grip edits,
+        // and plugin request draining).
+        #[cfg(not(target_arch = "wasm32"))]
+        self.notify_plugins_selection_changed();
         // OTRACK acquires tracking points only while a command or grip drag is
         // running; drop them once neither is active so the temporary tracking
         // points / vectors disappear when the command ends (issue #64).
@@ -3915,10 +3939,7 @@ impl OpenCADStudio {
                 Task::none()
             }
             Message::MTextHeight(s) => {
-                if let Some(ed) = self.mtext_editor.as_mut() {
-                    ed.height = s;
-                }
-                self.rebuild_mtext_preview();
+                self.mtext_apply_span_number("height", s);
                 Task::none()
             }
             Message::MTextRectWidth(width) => {
@@ -3950,26 +3971,128 @@ impl OpenCADStudio {
                 Task::none()
             }
             Message::MTextOblique(s) => {
-                if let Some(ed) = self.mtext_editor.as_mut() {
-                    ed.oblique = s;
-                }
-                self.rebuild_mtext_preview();
+                self.mtext_apply_span_number("oblique", s);
                 Task::none()
             }
             Message::MTextWidth(s) => {
+                self.mtext_apply_span_number("width", s);
+                Task::none()
+            }
+            Message::MTextCharSpace(s) => {
+                self.mtext_apply_span_number("tracking", s);
+                Task::none()
+            }
+            Message::MTextUndo => {
+                self.mtext_undo();
+                Task::none()
+            }
+            Message::MTextRedo => {
+                self.mtext_redo();
+                Task::none()
+            }
+            Message::MTextStack => {
+                self.mtext_stack_selection();
+                Task::none()
+            }
+            Message::MTextClearFormatting => {
+                self.mtext_clear_formatting();
+                Task::none()
+            }
+            Message::MTextInsert(value) => {
+                self.mtext_type(&value);
+                Task::none()
+            }
+            Message::MTextAnnotative(value) => {
                 if let Some(ed) = self.mtext_editor.as_mut() {
-                    ed.width = s;
+                    ed.annotative = value;
                 }
                 self.rebuild_mtext_preview();
                 Task::none()
             }
-            Message::MTextCharSpace(s) => {
+            Message::MTextColumnMode(mode) => {
                 if let Some(ed) = self.mtext_editor.as_mut() {
-                    ed.char_space = s;
+                    match mode.as_str() {
+                        "Static" => {
+                            ed.column_type = 1;
+                            ed.column_auto_height = false;
+                        }
+                        "Dynamic auto" => {
+                            ed.column_type = 2;
+                            ed.column_auto_height = true;
+                        }
+                        "Dynamic manual" => {
+                            ed.column_type = 2;
+                            ed.column_auto_height = false;
+                        }
+                        _ => ed.column_type = 0,
+                    }
                 }
                 self.rebuild_mtext_preview();
                 Task::none()
             }
+            Message::MTextColumnCount(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.column_count = value;
+                }
+                self.rebuild_mtext_preview();
+                Task::none()
+            }
+            Message::MTextColumnWidth(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.column_width = value;
+                }
+                self.rebuild_mtext_preview();
+                Task::none()
+            }
+            Message::MTextColumnGutter(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.column_gutter = value;
+                }
+                self.rebuild_mtext_preview();
+                Task::none()
+            }
+            Message::MTextColumnHeight(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.rect_height = value;
+                }
+                self.rebuild_mtext_preview();
+                Task::none()
+            }
+            Message::MTextColumnFlowReversed(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.column_flow_reversed = value;
+                }
+                self.rebuild_mtext_preview();
+                Task::none()
+            }
+            Message::MTextParagraphNumber(field, value) => {
+                self.mtext_apply_paragraph_number(field, value);
+                Task::none()
+            }
+            Message::MTextFindText(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.find_text = value;
+                }
+                Task::none()
+            }
+            Message::MTextReplaceText(value) => {
+                if let Some(ed) = self.mtext_editor.as_mut() {
+                    ed.replace_text = value;
+                }
+                Task::none()
+            }
+            Message::MTextFindNext => {
+                self.mtext_find_next();
+                Task::none()
+            }
+            Message::MTextReplaceNext => {
+                self.mtext_replace_next();
+                Task::none()
+            }
+            Message::MTextReplaceAll => {
+                self.mtext_replace_all();
+                Task::none()
+            }
             Message::MTextJustify(ap) => {
                 if let Some(ed) = self.mtext_editor.as_mut() {
                     ed.attachment = ap;

src/app/update/viewport.rs

@@ -4620,7 +4620,10 @@ impl OpenCADStudio {
                     if let Some(AcadEntityType::Viewport(vp)) =
                         self.tabs[i].scene.document.get_entity(h)
                     {
-                        if Scene::is_content_viewport(vp) {
+                        if !Scene::is_sheet_viewport(
+                            &self.tabs[i].scene.document,
+                            vp,
+                        ) {
                             Some(h)
                         } else {
                             None

src/app/view/overlay.rs

@@ -6,7 +6,8 @@ use iced::advanced::renderer;
 use iced::advanced::widget;
 use iced::advanced::{Layout, Shell, Widget};
 use iced::widget::{
-    button, column, container, mouse_area, row, scrollable, stack, text, text_input, Space,
+    button, checkbox, column, container, mouse_area, row, scrollable, stack, text, text_input,
+    Space,
 };
 use iced::{Background, Border, Color, Element, Event, Fill, Length, Rectangle, Size, Theme, Vector};
 use crate::t;
@@ -374,7 +375,7 @@ pub(super) fn mtext_editor_overlay<'a>(
         iced::widget::Space::new().width(Fill).height(Fill),
         t!("Text Editor"),
         content,
-        Message::MTextCancel,
+        Message::MTextOk,
         modal_offset,
         crate::ui::modal::ModalOptions::STANDARD,
     )
@@ -450,6 +451,9 @@ fn mtext_editor_content<'a>(
         .on_select(Message::MTextStyle)
         .text_size(11)
         .width(iced::Length::Fixed(96.0));
+    let annotative = checkbox(ed.annotative)
+        .on_toggle(Message::MTextAnnotative)
+        .size(14);
     let font_sel = if ed.font.trim().is_empty() {
         "[Style default]".to_string()
     } else {
@@ -487,6 +491,9 @@ fn mtext_editor_content<'a>(
 
     let row1 = row![
         style_pl,
+        row![annotative, text(t!("Annotative")).size(11)]
+            .spacing(3)
+            .align_y(iced::Alignment::Center),
         font_pl,
         small_input("2.5", &ed.height, Message::MTextHeight, 64.0),
         iced::widget::Space::new().width(6),
@@ -535,6 +542,14 @@ fn mtext_editor_content<'a>(
     .text_size(11)
     .width(iced::Length::Fixed(112.0));
     let row2 = row![
+        button(lbl("↶"))
+            .on_press(Message::MTextUndo)
+            .padding(3)
+            .style(btn_style),
+        button(lbl("↷"))
+            .on_press(Message::MTextRedo)
+            .padding(3)
+            .style(btn_style),
         lbl("O"),
         small_input("0", &ed.oblique, Message::MTextOblique, 48.0),
         lbl("W"),
@@ -573,6 +588,144 @@ fn mtext_editor_content<'a>(
             .on_press(Message::MTextLineSpacing(2.0))
             .padding(3)
             .style(btn_style),
+        button(lbl("Stack"))
+            .on_press(Message::MTextStack)
+            .padding(3)
+            .style(btn_style),
+        button(lbl("Clear"))
+            .on_press(Message::MTextClearFormatting)
+            .padding(3)
+            .style(btn_style),
+        button(lbl("°"))
+            .on_press(Message::MTextInsert("°".to_string()))
+            .padding(3)
+            .style(btn_style),
+        button(lbl("±"))
+            .on_press(Message::MTextInsert("±".to_string()))
+            .padding(3)
+            .style(btn_style),
+        button(lbl("⌀"))
+            .on_press(Message::MTextInsert("⌀".to_string()))
+            .padding(3)
+            .style(btn_style),
+    ]
+    .spacing(4)
+    .align_y(iced::Alignment::Center)
+    .width(width);
+
+    let column_mode = match (ed.column_type, ed.column_auto_height) {
+        (1, _) => "Static",
+        (2, true) => "Dynamic auto",
+        (2, false) => "Dynamic manual",
+        _ => "No columns",
+    }
+    .to_string();
+    let column_picker = iced::widget::pick_list(
+        Some(column_mode),
+        ["No columns", "Static", "Dynamic auto", "Dynamic manual"]
+            .into_iter()
+            .map(str::to_string)
+            .collect::<Vec<_>>(),
+        |value| value.to_string(),
+    )
+    .on_select(Message::MTextColumnMode)
+    .text_size(11)
+    .width(iced::Length::Fixed(120.0));
+    let reverse = checkbox(ed.column_flow_reversed)
+        .on_toggle(Message::MTextColumnFlowReversed)
+        .size(14);
+    let row3 = row![
+        lbl("Columns"),
+        column_picker,
+        lbl("Count"),
+        small_input("2", &ed.column_count, Message::MTextColumnCount, 42.0),
+        lbl("Height"),
+        text_input("0", &ed.rect_height)
+            .on_input(Message::MTextColumnHeight)
+            .width(iced::Length::Fixed(58.0))
+            .padding(3)
+            .size(12),
+        lbl("Width"),
+        small_input("0", &ed.column_width, Message::MTextColumnWidth, 58.0),
+        lbl("Gutter"),
+        small_input("0", &ed.column_gutter, Message::MTextColumnGutter, 58.0),
+        reverse,
+        lbl("Reverse"),
+        iced::widget::Space::new().width(8),
+        lbl("First"),
+        text_input("0", &ed.paragraph_first_indent)
+            .on_input(|value| Message::MTextParagraphNumber(
+                super::super::mtext_editor::ParaNumber::FirstIndent,
+                value,
+            ))
+            .width(iced::Length::Fixed(48.0))
+            .padding(3)
+            .size(12),
+        lbl("Left"),
+        text_input("0", &ed.paragraph_left_indent)
+            .on_input(|value| Message::MTextParagraphNumber(
+                super::super::mtext_editor::ParaNumber::LeftIndent,
+                value,
+            ))
+            .width(iced::Length::Fixed(48.0))
+            .padding(3)
+            .size(12),
+        lbl("Right"),
+        text_input("0", &ed.paragraph_right_indent)
+            .on_input(|value| Message::MTextParagraphNumber(
+                super::super::mtext_editor::ParaNumber::RightIndent,
+                value,
+            ))
+            .width(iced::Length::Fixed(48.0))
+            .padding(3)
+            .size(12),
+        lbl("Before"),
+        text_input("0", &ed.paragraph_space_before)
+            .on_input(|value| Message::MTextParagraphNumber(
+                super::super::mtext_editor::ParaNumber::SpaceBefore,
+                value,
+            ))
+            .width(iced::Length::Fixed(48.0))
+            .padding(3)
+            .size(12),
+        lbl("After"),
+        text_input("0", &ed.paragraph_space_after)
+            .on_input(|value| Message::MTextParagraphNumber(
+                super::super::mtext_editor::ParaNumber::SpaceAfter,
+                value,
+            ))
+            .width(iced::Length::Fixed(48.0))
+            .padding(3)
+            .size(12),
+    ]
+    .spacing(4)
+    .align_y(iced::Alignment::Center)
+    .width(width);
+    let row4 = row![
+        lbl("Find"),
+        text_input("Find", &ed.find_text)
+            .on_input(Message::MTextFindText)
+            .width(iced::Length::Fixed(140.0))
+            .padding(3)
+            .size(12),
+        button(lbl("Next"))
+            .on_press(Message::MTextFindNext)
+            .padding(3)
+            .style(btn_style),
+        lbl("Replace"),
+        text_input("Replace", &ed.replace_text)
+            .on_input(Message::MTextReplaceText)
+            .width(iced::Length::Fixed(140.0))
+            .padding(3)
+            .size(12),
+        button(lbl("Replace"))
+            .on_press(Message::MTextReplaceNext)
+            .padding(3)
+            .style(btn_style),
+        button(lbl("Replace All"))
+            .on_press(Message::MTextReplaceAll)
+            .padding(3)
+            .style(btn_style),
     ]
     .spacing(4)
     .align_y(iced::Alignment::Center)
@@ -710,13 +863,13 @@ fn mtext_editor_content<'a>(
             .into()
     };
 
-    // ── Top action bar: Apply on the right, exactly like the style managers'
-    // toolbar strip. Closing (the modal ✕) without applying discards the
-    // buffer, so there is no separate Cancel.
+    // ── Top action bar: Apply keeps editing; Close saves and exits. Escape
+    // remains the explicit discard path.
     let action_bar = container(
         row![
             iced::widget::Space::new().width(width),
             crate::ui::style::style_manager::tb_button(t!("Apply"), Message::MTextApply, true),
+            crate::ui::style::style_manager::tb_button(t!("Close Text Editor"), Message::MTextOk, true),
         ]
         .align_y(iced::Alignment::Center),
     )
@@ -730,7 +883,7 @@ fn mtext_editor_content<'a>(
     .padding([5, 8]);
 
     container(
-        column![action_bar, row1, row2, width_slider, body]
+        column![action_bar, row1, row2, row3, row4, width_slider, body]
             .spacing(6)
             .width(width)
             .height(height),