The best way to jump around between 3 areas of program?

[AK]

Programs that have multiple panes usually have a shortcut to jump around 
them. For instance, Treepad uses ctrl-tab. But I already have 
flatNotebook in one pane, and ctrl-tab is also used for switching tabs. 
Is there a shortcut that's used in a few programs that's not ctrl-tab? 
For that matter, I couldn't find how to change it in flatnotebook.py. Is 
it using wx.EVT_NAVIGATION_KEY, it seems, but how then it knows if it's 
ctrl-tab or ctrl-alt-tab for reverse switch? There's 
event.GetDirection() call there, I feel like I'm a little lost. I'm 
thinking maybe I should use ctrl-right and ctrl-left to change tabs and 
ctrl-tab to cycle through 3 areas of the application. thanks! -ak