Quick Switcher

Press <kbd>⌘/Ctrl</kbd> + <kbd>K</kbd> to invoke the quick switcher. By default it will let you select a composition.
In the input field, you filter for compositions by typing in their ID.

Navigating through menu items

If you type ">" as the first character, you can navigate through the menu items.
Add more characters after ">" to filter the menu items.

Searching documentation

If you type "?" as the first character, you can search this very documentation.
Add more characters after "?" to enter a query.

Keyboard navigation

Use up and down arrow keys to navigate through the menu items.
Press <kbd>Enter</kbd> to select the currently highlighted item and close the quick switcher.
Press <kbd>Esc</kbd> to close the quick switcher.