# Keyboard Shortcuts The modifier is Ctrl on Windows & Linux and ⌘ on Mac. - Ctrl/⌘+m - toggle markdown - Ctrl/⌘+d - toggle mic mute - Ctrl/⌘+e - toggle video on/off - Ctrl/⌘+k - jump to named room - ↑/↓ - navigate old messages to edit when the composer is in focus - ↑/↓ - next/prev room when focus in room list - Alt+↑/↓ - resend previous messages when the composer is in focus - PageUp/PageDown - scroll timeline up/down - Ctrl/⌘+Home/End - jump to start/end of the composer when focused, otherwise jump to timeline start/end - Ctrl/⌘+` - toggle the top left menu