======Synopsis:======
[[on]] [<modes>]keybinding [<serial#>] [-|^]<match> { <action> }

======Description:======
This hook is triggered whenever a keybinding is activated.

======Parameters:======
|$0    |The keybinding that's activated                         |
|$1    |Length of the sequence (future expansion - currently 0) |
|$2    |ASCII number of the key that's activated it             |