mapping keys

[quite]

Mapping C-a to 0 doesn't work: map <C-a> 0 Also, I'd like to make C-tab, but it doesn't work: map gt

(and as well C-S-tab)

[microamp]

Possible to map Alt/Meta in apvlv?

If not, perhaps it's worth making it work like the way the Vimperator plugin does? For example, A-v (which can be mapped to C-u for Emacs users).