If you search in source code for "RecordBegin(RcVc" you will see all the fields that you can use. The "flags" go from 1 to 29 so anything higher than flags[29] will not work.
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...
