opendarwin man page for time

time(n) 						       Tcl Built-In Commands							   time(n)

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NAME
       time - Time the execution of a script

SYNOPSIS
       time script ?count?
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DESCRIPTION
       This command will call the Tcl interpreter count times to evaluate script (or once if count isn't specified).  It will then return a string
       of the form
	      503 microseconds per iteration
       which indicates the average amount of time required per iteration, in microseconds.  Time is measured in elapsed time, not CPU time.

SEE ALSO
       clock(n)

KEYWORDS
       script, time

Tcl																	   time(n)