The workspace

• Menu bar (top): File / Edit / View / Arrange / Verify / Help. On a narrow window — or a normal one at a high browser zoom — the bar gives way rather than pushing the app sideways: below ~780 px of layout width the "Glyph" wordmark and version drop to the logo alone, and below ~620 px the six menus fold into a single ☰ button that lists them all — hover a row, or click it, or focus it and press Enter, Space or → (← steps back out). Nothing becomes unreachable by mouse OR keyboard, and the page itself never scrolls horizontally. Each folded menu is capped to the window height and scrolls, so a long menu (File, Edit, Arrange) keeps every command reachable on a short window too. If Claude holds a folder grant, the bar degrades one step earlier and the pill's folder chip shrinks to its icon — the folder name stays in its tooltip and in the pill's popover — so the chip and the unread badge are never cut off the edge. A greyed-out menu item's tooltip names the reason it's disabled right now, instead of leaving you to guess. With the keyboard, the arrow keys stop on a greyed item too; a small line beside it shows the reason, and a screen reader reads it; Enter does nothing there. The canvas right-click menu and the toolbar's Boolean and Align flyouts work the same way. After you run a command from a menu or a toolbar flyout (Boolean, Align, Circle/Arc) with the keyboard, focus goes back to the canvas, so the next key reaches the drawing; Escape instead returns you to the button that opened it.
• Tab strip: one tab per open file. [+] spawns a blank document; × closes. Switch tabs to edit a different document; the clipboard is shared across tabs so you can copy/paste between them. The browser tab's own title follows the active document (chip.gds — Glyph, with a leading ● while it has unsaved changes). Tabs are keyboard-operable: Tab to a tab, ←/→ (and Home/End) to walk the strip, Enter or Space to switch — or run Next tab / Previous tab from the command palette (Ctrl+K).
• Toolbar: grouped into Draw, Transform (the Align dropdown, Flip horizontally / vertically, Rotate +90°, Array, Flatten text), Boolean, Modify, History. Each group has a small label above it; when the toolbar row is scrolled and a group is only partly in view, its label slides to stay readable, or is hidden if it cannot fit whole (its buttons keep their own names). The Boolean group is a single flyout icon listing Union / Difference / Intersect / XOR with their hotkeys — select 2+ shapes, then click a row, press U/D/I/X directly, right-click for the context menu, or use Edit in the menu bar.
• Canvas (left and center): the drawing surface.
• Right panel: Properties on top, the editable numeric properties of whatever is selected; below it four tabs — Layers, Cells (the hierarchy), Objects (the active cell's own shapes and references) and Results (findings from a check, a diff or imported markers). Below 580 px of window width the right panel is not a column: it opens over the canvas from the toolbar's Panels button (the panel icon at the right end of the toolbar), so the canvas keeps the whole width.
• Component library (left edge, only while it is open from the toolbar's Library button). On a window too narrow to hold both side panels and a canvas, the panels are squeezed (the wider one first) so the canvas never disappears; the width you dragged is remembered and comes back when the window widens. The same holds vertically: on a window too short to keep a working canvas the toolbar gives way first (every tool keeps its letter key and its command-palette entry), then the hint line, so the drawing surface never collapses to a sliver. Both come straight back as the window grows.
• Hint line (just above the status bar): what the current tool expects next, and — while you are inside a cell — an Editing <cell> — Esc to go back breadcrumb.
• Status bar (bottom): cursor coords, save target (where Ctrl+S goes — Not saved for a fresh document with nothing to lose, Unsaved once it holds edits no file has, Downloaded after a Save that could only download a copy (this browser gives Glyph no file to write back to), the file's name once Save writes back to one; each word names one state, and a dot beside it means unsaved edits — or Opened from CIF / DXF / GDS / … for a file opened without a writable handle or one Glyph will not overwrite in place; hover it to see what Save writes instead), counts, a Marker N of M chip while review markers exist (N/M on a narrow window — F2 steps it), live measurement, and the ORTHO / POLAR / hierarchy-level toggles. The cursor x, y read-out shows exactly the precision the current zoom can resolve — the decimals follow the zoom, so a wafer-wide view reads 2740 µm rather than a false 2740.11 µm, and at 1 nm per pixel the same read-out shows fractional nanometres. Ruler tick labels follow the same rule.
• Scale bar (bottom-left corner of the canvas): a live yardstick that spans a whole number of grid cells — as many as fit in about 60–100 screen pixels — and states that length in your display unit; the rule is always an exact multiple of the current snap step. When one grid cell is already wider than the bar, the bar shows that single cell.

Keyboard / accessibility. Press Tab once from a fresh page load and the first stop is a Skip to canvas link — activating it moves keyboard focus straight to the drawing surface, bypassing the menu bar and the toolbar. The canvas shows a visible orange focus ring while it holds keyboard focus, so you can always tell whether a key press will reach the drawing; a screen reader names it "Layout canvas — <cell>", the cell you are editing. Open and Save are pinned at the right end of the toolbar row and never scroll off, however narrow the window — they read as data-loss risk if either ever vanished silently. Below about 1024 px of window width, the DRAW / TRANSFORM / BOOLEAN / MODIFY tool groups scroll horizontally instead (on a tablet-width toolbar, 480–1200 px, Undo and Redo are pinned beside Open and Save; only on a phone does HISTORY scroll with the rest): a chevron appears at each edge that has a group off-view, naming what moved ("More · 2" plus, on hover, which groups), and one click on it brings the next group fully into view — or roll the mouse wheel over the strip, which scrolls it sideways. A group only partly in view keeps its label clear of the edge's fade, or hides it rather than show a cut-off word. The Open and Save toolbar buttons name their shortcuts in their tooltips (Ctrl+O / Ctrl+S), and follow any remap made in File → Setup → Keyboard shortcuts….

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