I think the ¡°reset prior¡± option is a hold-over from the Turnout Controlled Mast. That has the same option.
There were two use cases for that:
1) For some uses, just the new turnout command has to be set. For other uses, the new one has to be set _and_ the old one has to be reset to prevent the two appearances being mixed.
2) Some people think that a moment of dark in between the new and old appearances is more prototypical.
I¡¯m not sure that either of those is relevant for Matrix Masts, but I don¡¯t have a lot of direct experience.
Bob
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Bob Jacobsen
rgj1927@...
Bob Jacobsen