Captures the current System Timer value to the the current task's timer register. This can subsequently be used for timing calculations. A fatal error will occur if this instruction is executed outside of a task in the MultiTrack task queue. This is a companion to LoopIfTiming
Warning: You cannot use Pause ,WaitOnT ,WaitOffT or WaitOnKT inside a MarkTime/LoopIfTiming loop
Dialect exclusions: Not available in dialects before 16.