Multiple lines tab indent/unindent

[jnko]

Nearly every text editor has tha capability to indent/unindent multiple lines by simply pressing the "tab" key.
ox just delete the lines and inserts a tab.

It would be nice to implement that functionality.

My other idea was to create this via a plugin.
There are before and after key events in ox. But is there a way to suppress a key press event?
This way I could modify the quickcomment plugin to realize the indent/unindent function. But for that it would be nessesary to suspress a keypress completely.