Edit>More Clipboard>Vertical Paste command (shortcut: Control-E Control-P) behaves in a more intelligent manner. Entering characters while a rectangular selection is active inserts into each row of the selection, thus a zero-width rectangular selection can now act like a “tall caret”.

The new Edit>More Selection>Rectangular Selection command (shortcut: Alt-\) permits rectangular selections to be created using the keyboard. A static bar indicator is shown when rectangular selection mode is active.

Clicking beyond the end of a line in rectangular selection mode (or Control-clicking otherwise) inserts the appropriate amount of whitespace and moves the caret to the clicked location.

The rectangular selection now acts like a “tall caret”. Inserting text or pressing Backspace or Delete while a rectangular selection is active performs that operation on each selected line.