[W] is the hotkey to Play Flipbook,
you can tweak the amount (back/fore, unit = second) in the Preview Settings window,
and the flipbook speed is related to the speed preview setting,

- playback-speed.png (2.02 KiB) Viewed 33504 times
you can change it f.i. to half the project speedrate with a little script, buttonize it + assign it to a hotkey,
george cmd to change framerate preview is "
TV_FrameRate [
Rate]
Preview"
where "
Rate" is the custom speedrate for your playback.
for "freehand" flipbook (right/left LMB-clic & drag), afaik, there's no command or shortcut,
so +1 for this request.
