while(n)                     Tcl ( )                     while(n)



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     NAME
          while - Execute script repeatedly as long as a condition  is
          met

     SYNOPSIS
          while test body
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     DESCRIPTION
          The while command evaluates test as an  expression  (in  the
          same  way  that  expr evaluates its argument).  The value of
          the expression must a proper boolean value; if it is a  true
          value  then  body  is  executed  by  passing  it  to the Tcl
          interpreter.  Once body  has  been  executed  then  test  is
          evaluated  again,  and  the process repeats until eventually
          test evaluates to a false boolean value.  Continue  commands
          may  be  executed  inside  body  to  terminate  the  current
          iteration of the loop, and break commands  may  be  executed
          inside  body  to  cause  immediate  termination of the while
          command.  The while command always returns an empty string.


     KEYWORDS
          boolean value, loop, test, while




























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