PAFL Additive softkey

Being able to use a softkey to turn the PAFL from single to additive would be a tiny little gem.

2x engineers I work with (one is really getting into the dlive vibe, another still using them begrudgingly) have both asked me if this is possible and the best I’ve come up with is to use a softkey bookmarked to the PAFL page.

Please! Make them stop asking! In v2.1!