Several MQX event functions (e.g. _event_wait_all, _event_clear, _event_set) have an argument _mqx_uint bit_mask.
The reference manual only gives a cryptic definition for this argument:
"Each set bit represents an event bit to clear"
Most of the examples use the constant 0x01 for the bit_mask argument, so there is no help there.
Does anyone know precisely what this argument does?