in help document of Timer() :
"Returns the number of seconds elapsed since the first call to Timer, Delay, or SyncWait, or the first operation on a timer control.
The value is never reset to zero except when you restart the program.
"
in my code,after restart the program,sometimes the first call to Timer(),return 0 second; and sometimes,return above 0 seconds,such as 40 seconds.
why?