while(3Tcl)

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

SYNOPSIS
     while test body


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