AE switch comp shortcut?

See After Effects Help, specifically the bottom of the "Panels, viewers, workspaces, and windows" table here:
http://helpx.adobe.com/after-effects/using/keyboard-shortcuts-reference.htm...

... and the "Compositions" table here:
http://helpx.adobe.com/after-effects/using/keyboard-shortcuts-reference.htm...

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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"Cycle to previous or next item in active viewer (for example, cycle through open compositions)

Shift+, (comma) or Shift+. (period)"

You'll need multiple Comp Viewers open for this to work and to have the keyboard focus on the Comp window. It doesn't appear to work when keyboard focus is on the Timeline.

Note that if you open another Comp viewer then dock them together you may need to unlock one of them for the Timeline to switch between Comps.

Here's how it works:

SwitchComp

Oh, just found alt shift , and.
or AltShift<, AltShift> as an easier way to remember
or Alt+Shift+CommaOnTheKeyboardNotOnTheNumPad, Alt+Shift+PeriodOnTheKeyboardNotOnTheNumPad,

Thatis great. 16 years in and still a new thing every day!