Described in the thread:
http://www.cockos.com/forum/showthread.php?t=2509
EDIT: forget about this below!
Would be handy! Also it would be good to be able to easily rename an item, like in Cubase where you (i think) ALT+doubleclick the part that one would like to rename and instantly an edit window appears letting the user type in the new name.
/R