Silence by bars instead of seconds in wave editor

It would be very handy to be able to ‘silence’ segments of an audio file, either by selecting a region or by choosing a number of bars (instead of seconds), starting at the playhead’s position.
Music Studio
http://www.xewton.com/musicstudio/forum/
http://www.xewton.com/musicstudio/forum/viewtopic.php?f=12&t=8070