New simvars for Master warning / caution

Anyone know what these newly added simvars are. I see in release notes they’ve been added, but they haven’t said what they are, and I’m unable to find what they could be in the new SDK documentation.

For further reference:
These simvars are called

MASTER CAUTION ACTIVE
MASTER WARNING ACTIVE

There are also versions with ACKNOWLEDGED instead of ACTIVE, but I have only used the active ones. Type is bool and I have successfully received these via the sim connect managed code (from .Net/C#) library.

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