[TxMt] Next/previous tab bindings?

[Jay Levitt]

I'm trying to get all my apps to use the same basic keystrokes.  After a 
random dice roll, I decided on command-{ and } for previous/next tab.  But I 
can't figure out what to put in KeyBindings.dict; the obvious, 
"previousTab:" and "nextTab:", didn't work.  Neither did 
"selectNextTabViewItem:" and "selectPreviousTabViewItem:".

So:

1. Can someone tell me what the right action is?  Or is it not bindable?

2. How could I have found the answer to #1 myself?

Thanks..

Jay Levitt