[TxMt] Keybinding command for "next file tab"?

[Stuart Hungerford]

Hi,

I'd like to bind a (different) key to the "next file tab"
function.  Can someone tell me what the appropriate string
to use in the defaultKeyBinding.dict file is?

Apologies once more if this is a stupid question--I'm
still learning my way around Mac OS/X.

Stu