Grass Valley DD10 part 2 - Manual (Page 13)

3.6 Disk / File menu Diamond digital DD10
185
Press the associated function key to change the selected name to the new name.
Press the associated function key to delete the character left of the current cursor
position in the editing line.
Press the associated function key to clear the entire editing line.
Press the associated function key to cancel the renaming procedure.
OK
RUBOUT
CLEAR
CANCEL