Freeze :

"Freeze" mode precalculate track précalcule in an audio file to limitate calcul time for the next rendering.

Clic "freeze" button:
Then clic "track" or "note" you want to "freeze".
T rack's sub-objects are also freezed.

Snowflake on "glong" and "noise" tracks means they are both freezed. However only"glong" has beens already precalculated. Snoxflake is blue when object has to be precalculate and white when it is.

This allow to clearly visualize object needing to be updated after modifications.