Timescale and Timeunit

In reply to SumitGoel:

Just to clarify, what is the persistence of timeunit/timeprecision - containing module? Until another `timescale/timeunit/etc is encountered? Finally, LRM indicates usage of timeunit is all or none, any other ussage is an error. That seems to be tool-dependent as I’m not seeing an error when only my top TB has it.