Android uses 'meta' for the built-in keyboard shortcuts, such as meta+B for the web browser, meta+E for the email app, meta+enter to switch back to the launcher (i.e. 'HOME'), and meta+backspace for 'BACK'. This list of shortcuts is extensible, but I don't think the interface is currently exposed in any system app. By default, the 'F logo' key generates KEY_META in LineageOS, enabling these shortcuts. You can display a list of the currently defined shortcuts with meta+/, although this is unfortunately a three-key chord on the Pro1 which makes it rather difficult to type. 😕 However, pressing b