diff --git a/README.md b/README.md
index 2a71f68..99ce792 100644
--- a/README.md
+++ b/README.md
@@ -179,7 +179,7 @@ rebindable in `Ctrl` + `,`(`⌘Cmd` + `,`) › Shortcuts.
 ## Settings
 
 `Ctrl` + `,`(`⌘Cmd` + `,`) holds the terminal font and size, interface scale, the language
-(English / 한국어), mouse and notification behaviour, and **19 built-in dark
+(English / 한국어), mouse and notification behavior, and **19 built-in dark
 palettes** — Catppuccin, Gruvbox, Nord, Tokyo Night, Solarized, Dracula, the
 [Zenbones](https://github.com/zenbones-theme/zenbones.nvim) trio, and the
 Termspace default. Drop a YAML into `~/.config/termspace/themes/` for your
diff --git a/src/renderer/styles/app.css b/src/renderer/styles/app.css
index 0a9240b..d86d906 100644
--- a/src/renderer/styles/app.css
+++ b/src/renderer/styles/app.css
@@ -1149,6 +1149,12 @@ body {
   gap: 8px;
 }
 
+/* A hairline between sections: headings alone did not separate them enough. */
+.settings__section + .settings__section {
+  padding-top: 20px;
+  border-top: 1px solid var(--border);
+}
+
 .settings__heading {
   margin: 0;
   font-size: var(--fs-ui);
diff --git a/src/shared/ui-strings.ts b/src/shared/ui-strings.ts
index 95cc3a4..aa329b7 100644
--- a/src/shared/ui-strings.ts
+++ b/src/shared/ui-strings.ts
@@ -156,11 +156,11 @@ const en = {
     uiScaleLabel: 'Interface size',
     uiScaleDesc: "Scales the app's own text and title bar. It leaves the terminal's font size alone.",
     focusBorderLabel: 'Focused pane border',
-    focusBorderDesc: 'White, the palette accent, or a colour you pick',
+    focusBorderDesc: 'White, the palette accent, or a color you pick',
     focusBorderWhite: 'White',
     focusBorderPalette: 'Palette accent',
     focusBorderCustom: 'Custom',
-    focusBorderColorTitle: 'Hex colour, like #7a9bbf',
+    focusBorderColorTitle: 'Hex color, like #7a9bbf',
     localeLabel: 'Language',
     localeDesc: 'Applied the next time the app starts.',
     localeSystem: 'Follow the system',
@@ -194,7 +194,7 @@ const en = {
     copyOnSelectLabel: 'Copy on select',
     copyOnSelectDesc: 'Mouse selections go straight to the clipboard',
     barPanningLabel: 'Horizontal scroll on the title',
-    barPanningDesc: 'Rolling the wheel over the centre title pans the canvas',
+    barPanningDesc: 'Rolling the wheel over the center title pans the canvas',
     shiftPanningLabel: 'Shift + wheel horizontal scroll',
     shiftPanningDesc: 'Shift-rolling over a terminal pans the canvas too',
     paneLabelsLabel: 'Show pane titles while holding the move key',
@@ -207,7 +207,7 @@ const en = {
     fontMissing: (name: string) => `${name} — not installed`,
     textRenderingLabel: 'Text rendering',
     textRenderingDesc: 'Applied the next time the app starts.',
-    textRenderingGrayscale: 'Greyscale',
+    textRenderingGrayscale: 'Grayscale',
     textRenderingSubpixel: 'Subpixel',
     paletteLabel: 'Palette',