I use a Japanese keyboard and I remap the "無変換" key (normal sized key just to the left of the space) as tab. Then I remap the real Tab key to be Esc and the Ca

I use a Japanese keyboard and I remap the "無変換" key (normal sized key just to the left of the space) as tab. Then I remap the real Tab key to be Esc and the Caps Lock to be Ctl. It's very handy for using vim keybindings :-)