diff --git a/CLAUDE.md b/CLAUDE.md
index bb4221f..92d03df 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -92,6 +92,7 @@ src/
                               orderedListTypes, historyLog, colorDebug)
     math/                   – formula AST: LaTeX parser/serializer, MathML, OMML
     export/ import/ spell/ storage/ styles/  – ODF+DOCX I/O, spell-check, persistence, named styles
+    templates/              – built-in document templates: registry + one localized module each
   styles/                   – global.css + editor.css
 ```
 
diff --git a/src/lib/components/CLAUDE.md b/src/lib/components/CLAUDE.md
index 6d0fa69..d3aa281 100644
--- a/src/lib/components/CLAUDE.md
+++ b/src/lib/components/CLAUDE.md
@@ -199,6 +199,15 @@ per page in unscaled document px. The watermark is an `<svg><text textLength>` b
 fontwork shape **stretches** its text to its box instead of setting it at a size — a font
 size alone makes a short word far too small and a long one overflow the page.
 
+## Built-in templates (`TemplateGalleryDialog.svelte`, `lib/templates/`)
+
+"New from template" in both chromes opens the gallery; a card applies its entry via
+`App.svelte`'s `applyTemplate` — `resetDocumentState()` (the extracted body of New),
+then the template's content, margins, styles and fold marks. `documentName` becomes the
+localized template name and no file handle is bound, so the first Save asks where. The
+DIN letter's mm positions were verified headlessly (45mm address field, 125mm info
+column); its module documents the arithmetic.
+
 ## Fold marks (`FoldMarkLayer.svelte`, `storage/foldMarks.ts`)
 
 Fold + punch marks at the DIN 5008 positions, drawn per page in the left margin from
diff --git a/src/lib/templates/din5008b.ts b/src/lib/templates/din5008b.ts
index a9f6590..9cfff65 100644
--- a/src/lib/templates/din5008b.ts
+++ b/src/lib/templates/din5008b.ts
@@ -25,8 +25,12 @@ const BOLD = { type: 'bold' };
 
 function buildLetter(): TemplateData {
   const L = t().templates.letter;
+  // An info line with no address half indents to the column instead of leading with
+  // a tab (a tab with nothing before it stays on the default grid).
   const addressRow = (attrs: N | null, addr: N[], info: N[]): N =>
-    P({ ...(attrs ?? {}), tabStops: INFO_TAB }, ...addr, T('\t'), ...info);
+    addr.length
+      ? P({ ...(attrs ?? {}), tabStops: INFO_TAB }, ...addr, T('\t'), ...info)
+      : P({ ...(attrs ?? {}), indent: 10 }, ...info);
   const date: N = { type: 'dateTimeField', attrs: { kind: 'date', format: DEFAULT_DATE_FORMAT, fixed: true, value: toDateValue(new Date()) } };
   return {
     margins: { top: 2, bottom: 2, left: 2.5, right: 2 },
@@ -36,7 +40,8 @@ function buildLetter(): TemplateData {
       content: [
         P(null, PLH(L.companyName, BOLD)),
         // The one-line return address opens the address field at 45mm from the top.
-        P({ spaceBefore: RETURN_SPACE_BEFORE_PT, spaceAfter: RETURN_SPACE_AFTER_PT }, PLH(L.returnAddress, SMALL)),
+        // fontSize also shrinks the paragraph mark, so the line box is 8pt tall.
+        P({ spaceBefore: RETURN_SPACE_BEFORE_PT, spaceAfter: RETURN_SPACE_AFTER_PT, fontSize: '8pt' }, PLH(L.returnAddress, SMALL)),
         addressRow(null, [PLH(L.recipientCompany)], [T(L.yourRef), PLH(L.reference)]),
         addressRow(null, [PLH(L.recipientName)], [T(L.yourMessage), PLH(L.date)]),
         addressRow(null, [PLH(L.recipientStreet)], [T(L.ourRef), PLH(L.reference)]),