<u>Shortcuts for collections</u>:
<b>Arrow up, down</b> - move between items.
<b>Page up, down</b> - bigger jumps.
<b>ALT arrow left, right</b> -  number of current item and number of all items.
<b>ALT arrow up, down</b> - move the current item up and down (where applicable).
<b>Enter, Insert, Delete</b> - select, add and remove an item <i>(depends on collection type)</i>.