In older versions of Sonar there used to be this handy function - there were 3 metronome icons which allowed you to have a slow, actual and fast  (2x?)"temporary" project tempo that you could easily switch between and map to key bindings.  This is extremely useful for high speed scanning / previewing through sections of midi-only material without altering your project's actual assigned tempo.  I use this feature all of the time in Wavelab.   Does this functionality still exist or has it been streamlined away in the clutter purge of the last few years?