diff --git a/src/scene/text/lff.rs b/src/scene/text/lff.rs
index 3314d9b11..1b11ca98d 100644
--- a/src/scene/text/lff.rs
+++ b/src/scene/text/lff.rs
@@ -103,6 +103,91 @@ const SHX_SPACE: &[(&str, f32)] = &[
     ("ISOCP", 3.6),
 ];
 
+/// The pen advance of each printable ASCII character of the reference's
+/// stroke fonts, in glyph units (cap height 9), measured from their text
+/// extents: the SHX names these LFF fonts stand in for keep the reference's
+/// character widths, so lines measure, wrap and align like the reference.
+const SHX_ADVANCE: &[(&str, &[(u32, f32)])] = &[
+    (
+        "TXT",
+        &[
+            (33, 3.0000), (34, 6.0000), (35, 9.0000), (36, 9.0000), (38, 9.0000), (39, 4.5000),
+            (40, 6.0000), (41, 6.0000), (42, 9.0000), (43, 9.0000), (44, 4.5000), (45, 9.0000),
+            (46, 3.0000), (47, 9.0000), (48, 7.5000), (49, 6.0000), (50, 9.0000), (51, 9.0000),
+            (52, 9.0000), (53, 9.0000), (54, 9.0000), (55, 9.0000), (56, 9.0000), (57, 9.0000),
+            (58, 3.0000), (59, 4.5000), (60, 7.5000), (61, 9.0000), (62, 7.5000), (63, 7.5000),
+            (64, 9.0000), (65, 9.0000), (66, 9.0000), (67, 9.0000), (68, 9.0000), (69, 9.0000),
+            (70, 9.0000), (71, 9.0000), (72, 9.0000), (73, 6.0000), (74, 9.0000), (75, 9.0000),
+            (76, 9.0000), (77, 9.0000), (78, 9.0000), (79, 9.0000), (80, 9.0000), (81, 9.0000),
+            (82, 9.0000), (83, 9.0000), (84, 9.0000), (85, 9.0000), (86, 12.0000), (87, 12.0000),
+            (88, 9.0000), (89, 9.0000), (90, 9.0000), (91, 6.0000), (92, 9.0000), (93, 6.0000),
+            (94, 9.0000), (95, 9.0000), (96, 4.5000), (97, 9.0000), (98, 9.0000), (99, 9.0000),
+            (100, 9.0000), (101, 9.0000), (102, 9.0000), (103, 9.0000), (104, 9.0000), (105, 3.0000),
+            (106, 7.5000), (107, 9.0000), (108, 4.5000), (109, 9.0000), (110, 9.0000), (111, 9.0000),
+            (112, 9.0000), (113, 9.0000), (114, 9.0000), (115, 9.0000), (116, 9.0000), (117, 9.0000),
+            (118, 9.0000), (119, 9.0000), (120, 9.0000), (121, 9.0000), (122, 9.0000), (123, 6.0000),
+            (124, 3.0000), (125, 6.0000), (126, 9.0000),
+        ],
+    ),
+    (
+        "SIMPLEX",
+        &[
+            (33, 5.5714), (34, 6.4286), (35, 8.1429), (36, 8.5714), (38, 11.1429), (39, 3.8571),
+            (40, 6.0000), (41, 6.0000), (42, 6.8571), (43, 11.1429), (44, 4.2857), (45, 11.1429),
+            (46, 4.2857), (47, 9.4286), (48, 8.5714), (49, 6.8571), (50, 8.5714), (51, 8.5714),
+            (52, 8.5714), (53, 8.5714), (54, 8.5714), (55, 8.5714), (56, 8.5714), (57, 8.5714),
+            (58, 6.4286), (59, 6.0000), (60, 8.5714), (61, 11.1429), (62, 8.5714), (63, 7.7143),
+            (64, 10.2857), (65, 9.4286), (66, 9.0000), (67, 9.0000), (68, 9.0000), (69, 8.1429),
+            (70, 7.7143), (71, 9.0000), (72, 9.4286), (73, 3.4286), (74, 6.8571), (75, 9.0000),
+            (76, 7.2857), (77, 10.2857), (78, 9.4286), (79, 9.4286), (80, 9.0000), (81, 9.4286),
+            (82, 9.0000), (83, 8.5714), (84, 7.7143), (85, 9.4286), (86, 8.5714), (87, 10.2857),
+            (88, 8.5714), (89, 8.5714), (90, 8.5714), (91, 6.4286), (92, 9.4286), (93, 5.1429),
+            (94, 8.5714), (95, 10.2857), (96, 3.8571), (97, 8.1429), (98, 8.1429), (99, 7.7143),
+            (100, 8.1429), (101, 7.7143), (102, 5.1429), (103, 8.1429), (104, 8.1429), (105, 3.4286),
+            (106, 4.2857), (107, 7.2857), (108, 3.4286), (109, 12.8571), (110, 8.1429), (111, 8.1429),
+            (112, 8.1429), (113, 8.1429), (114, 5.5714), (115, 7.2857), (116, 6.0000), (117, 8.1429),
+            (118, 6.8571), (119, 9.4286), (120, 7.2857), (121, 6.8571), (122, 7.2857), (123, 5.1429),
+            (124, 3.0000), (125, 4.7143), (126, 11.1429),
+        ],
+    ),
+    (
+        "ROMANS",
+        &[
+            (33, 4.2857), (34, 6.0000), (35, 9.0000), (36, 8.5714), (38, 11.1429), (39, 4.2857),
+            (40, 6.0000), (41, 6.0000), (42, 6.8571), (43, 11.1429), (44, 4.2857), (45, 11.1429),
+            (46, 4.2857), (47, 9.4286), (48, 8.5714), (49, 8.5714), (50, 8.5714), (51, 8.5714),
+            (52, 8.5714), (53, 8.5714), (54, 8.5714), (55, 8.5714), (56, 8.5714), (57, 8.5714),
+            (58, 4.2857), (59, 4.2857), (60, 10.2857), (61, 11.1429), (62, 10.2857), (63, 7.7143),
+            (64, 11.5714), (65, 7.7143), (66, 9.0000), (67, 9.0000), (68, 9.0000), (69, 8.1429),
+            (70, 7.7143), (71, 9.0000), (72, 9.4286), (73, 3.4286), (74, 6.8571), (75, 9.0000),
+            (76, 7.2857), (77, 10.2857), (78, 9.4286), (79, 9.4286), (80, 9.0000), (81, 9.4286),
+            (82, 9.0000), (83, 8.5714), (84, 6.8571), (85, 9.4286), (86, 7.7143), (87, 10.2857),
+            (88, 8.5714), (89, 7.7143), (90, 8.5714), (91, 6.0000), (92, 9.4286), (93, 5.5714),
+            (94, 9.4286), (95, 10.2857), (96, 5.1429), (97, 8.1429), (98, 8.1429), (99, 7.7143),
+            (100, 8.1429), (101, 7.7143), (102, 5.1429), (103, 8.1429), (104, 8.1429), (105, 3.4286),
+            (106, 4.2857), (107, 7.2857), (108, 3.4286), (109, 12.8571), (110, 8.1429), (111, 8.1429),
+            (112, 8.1429), (113, 8.1429), (114, 5.5714), (115, 7.2857), (116, 5.1429), (117, 8.1429),
+            (118, 6.8571), (119, 9.4286), (120, 7.2857), (121, 6.8571), (122, 7.2857), (123, 6.0000),
+            (124, 3.4286), (125, 6.0000), (126, 11.1429), (33, 4.2857), (34, 6.0000), (35, 9.0000),
+            (36, 8.5714), (38, 11.1429), (39, 4.2857), (40, 6.0000), (41, 6.0000), (42, 6.8571),
+            (43, 11.1429), (44, 4.2857), (45, 11.1429), (46, 4.2857), (47, 9.4286), (48, 8.5714),
+            (49, 8.5714), (50, 8.5714), (51, 8.5714), (52, 8.5714), (53, 8.5714), (54, 8.5714),
+            (55, 8.5714), (56, 8.5714), (57, 8.5714), (58, 4.2857), (59, 4.2857), (60, 10.2857),
+            (61, 11.1429), (62, 10.2857), (63, 7.7143), (64, 11.5714), (65, 7.7143), (66, 9.0000),
+            (67, 9.0000), (68, 9.0000), (69, 8.1429), (70, 7.7143), (71, 9.0000), (72, 9.4286),
+            (73, 3.4286), (74, 6.8571), (75, 9.0000), (76, 7.2857), (77, 10.2857), (78, 9.4286),
+            (79, 9.4286), (80, 9.0000), (81, 9.4286), (82, 9.0000), (83, 8.5714), (84, 6.8571),
+            (85, 9.4286), (86, 7.7143), (87, 10.2857), (88, 8.5714), (89, 7.7143), (90, 8.5714),
+            (91, 6.0000), (92, 9.4286), (93, 5.5714), (94, 9.4286), (95, 10.2857), (96, 5.1429),
+            (97, 8.1429), (98, 8.1429), (99, 7.7143), (100, 8.1429), (101, 7.7143), (102, 5.1429),
+            (103, 8.1429), (104, 8.1429), (105, 3.4286), (106, 4.2857), (107, 7.2857), (108, 3.4286),
+            (109, 12.8571), (110, 8.1429), (111, 8.1429), (112, 8.1429), (113, 8.1429), (114, 5.5714),
+            (115, 7.2857), (116, 5.1429), (117, 8.1429), (118, 6.8571), (119, 9.4286), (120, 7.2857),
+            (121, 6.8571), (122, 7.2857), (123, 6.0000), (124, 3.4286), (125, 6.0000), (126, 11.1429),
+        ],
+    ),
+];
+
 // ── Public types ──────────────────────────────────────────────────────────
 
 /// One glyph: a list of open 2-D polyline strokes in glyph units.
@@ -179,12 +264,23 @@ fn fonts_map() -> &'static HashMap<String, Font> {
                 map.insert(alias.to_ascii_uppercase(), f);
             }
         }
-        // Those names keep the reference font's space width.
+        // Those names keep the reference font's space width and character
+        // advances (a glyph's advance plus the letter spacing).
         for (name, word) in SHX_SPACE {
             if let Some(f) = map.get_mut(*name) {
                 f.word_spacing = *word;
             }
         }
+        for (name, advances) in SHX_ADVANCE {
+            if let Some(f) = map.get_mut(*name) {
+                let spacing = f.letter_spacing;
+                for (code, advance) in advances.iter() {
+                    if let Some(glyph) = char::from_u32(*code).and_then(|c| f.glyphs.get_mut(&c)) {
+                        glyph.advance = (advance - spacing).max(0.0);
+                    }
+                }
+            }
+        }
         map
     })
 }