Shortcut for opacity jitter

[Otnaug]

Is there a shortcut or a way to set up a single button shortcut for turning on opacity jitter? (or how to create a shortcut for anything in the option panel).

i change my opacity using 0-9 but i'm also constantly switching to solid brush with no opacity. 

Thanks!
Otnaug 

[Signfeld · Accepted solution]

I'm not a Brush Master but you can save two versions/presets, no? At worst, you can make two Function keys (via action) for selecting those. With a script, maybe you can make a toggle needing just one key.

AFAIK, there are also shortcuts to switch quickly between previous/next brushes.