Hardware keyboard shortcuts
On a hardware keyboard, dotMux speaks the shortcuts you’d expect — hold ⌘ to see the full HUD:
⌘Tnew window ·⌘Wclose window ·⇧⌘]/⇧⌘[next / previous window ·⌘1–9jump to a window.⌘D/⇧⌘Dsplit ·⇧⌘Wclose pane ·⌃⌘-arrows resize ·⌘Ccopy the selection ·⌘Vpaste text or an image.
Esc, Ctrl, Tab, and the arrows come through directly, so the on-screen helper bar steps aside; turn on Show Bar with External Keyboard (Settings → Keyboard) to keep it. With a trackpad, right-click a pane for its menu — more in iPad and desk setups.