Hand Symbols - is there a standard vocabulary?

[austinrick]

Specifically, on Lorenzo Ressel's "Versione di Tumbao in 12/8" sheet, I see at the bottom a series of simple diagrams that obviously refer to hand position, or note type (slap, heel, etc.) for each note of the Tumbao.

Is there a standard vocabulary for this language in the conga world, and where can I find a complete legend?

thx!