trim clip 1 frame shortcut (elusive!)

[Strongbow]

Hi, I've been looking around but can't find this:

Is there a way to trim a clip by 1 frame (from front or back)?

I want to set a keyboard shortcut for this but can't find the command.

Obviously I can do it with my mouse, but want a shortcut - or to know what the command is called so I can set it!

Thanks

[Ann Bens]

Not really, this is the best I can come up with.

Page up/down

Arrow left/right

Q/W

[Strongbow]

Thanks, I can do that.... but looking for that I click magic!