Tcl_Sleep - delay execution for a given number of milliseconds

       int ms (in)          Number of milliseconds to sleep.
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       This  procedure  delays  the  calling process by the number of milliseconds given by the ms parameter and
       returns after that time has elapsed.  It is typically used for things like flashing a button,  where  the
       delay  is  short  and  the  application need not do anything while it waits.  For longer delays where the
       application needs to respond to other events  during  the  delay,  the  procedure  Tcl_CreateTimerHandler
       should be used instead of Tcl_Sleep.

       sleep, time, wait

Tcl                                                    7.5                                       Tcl_Sleep(3tcl)

       Tcl_Sleep - delay execution for a given number of milliseconds

#include<tcl.h>Tcl_Sleep(ms)