Sketch Dimension: D, click, type (#695)

As soon as a pick settles the dimension (one line, circle or arc, or the second point or line of a distance or angle), its value box takes the keyboard with the measured value selected. The text follows the cursor while typing and Enter places it there (or in its default place), as one undo step. A click before typing pins the text and keeps the box focused, a click on another entity makes a distance or angle, Tab hands back to placing first, Esc cancels. Letters go into the box, not to tool shortcuts.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/book/src/guide/shortcuts.md

@@ -26,6 +26,11 @@ Keys handled by the window itself:
 | F6 | fit the view to the model |
 | Esc | cancel the running command, or clear the selection |
 
+While a value box has the keyboard (a dimension being added, a dialog field), keys type into
+it and single-letter shortcuts don't fire. With Sketch Dimension (D), the box opens as soon as
+you click a line, circle or arc (or the second point or line), so D, click, type the value,
+Enter.
+
 Mouse and touch:
 
 | Action | Result |

docs/book/src/guide/sketching.md

@@ -131,6 +131,19 @@ midpoint, symmetry, fix, curvature (G2) and polygon. **Sketch Dimension** (D) ad
 aligned, horizontal, vertical, radius, diameter and angle dimensions. Each is a parameter
 (`d1`, `d2`, …), so it can hold an expression.
 
+Press D, click what you want to measure and type the value: as soon as the click settles the
+dimension (one line, circle or arc, or the second point or line of a distance or angle), its
+value box takes the keyboard with the measured value selected, so typing replaces it. Numbers,
+units (`1 in`), expressions (`2*width`) and parameter names all work; letters go into the box,
+not to tool shortcuts. While you type, the dimension text follows the cursor, and Enter places
+it there (or in its default place if you haven't moved the cursor) as one undo step. Esc
+cancels the dimension.
+
+You can still place the text first. Before you type, a click on empty sketch space puts the
+text there and keeps the value box focused; a click on another point or line makes the
+dimension a distance or angle instead; Tab leaves the picks waiting for a click to place the
+text.
+
 Between two points, or on a line, that don't line up with an axis, where you place the
 dimension picks what it measures: across from them, the distance between them; above or below
 them, the horizontal distance; beside them, the vertical distance.