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-'\"
-'\" Copyright (c) 1993 The Regents of the University of California.
-'\" Copyright (c) 1994-1997 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\" 
-.TH for n "" Tcl "Tcl Built-In Commands"
-.so man.macros
-.BS
-'\" Note:  do not modify the .SH NAME line immediately below!
-.SH NAME
-for \- 'For' loop
-.SH SYNOPSIS
-\fBfor \fIstart test next body\fR
-.BE
-
-.SH DESCRIPTION
-.PP
-\fBFor\fR is a looping command, similar in structure to the C
-\fBfor\fR statement.  The \fIstart\fR, \fInext\fR, and
-\fIbody\fR arguments must be Tcl command strings, and \fItest\fR
-is an expression string.
-The \fBfor\fR command first invokes the Tcl interpreter to
-execute \fIstart\fR.  Then it repeatedly evaluates \fItest\fR as
-an expression; if the result is non-zero it invokes the Tcl
-interpreter on \fIbody\fR, then invokes the Tcl interpreter on \fInext\fR,
-then repeats the loop.  The command terminates when \fItest\fR evaluates
-to 0.  If a \fBcontinue\fR command is invoked within \fIbody\fR then
-any remaining commands in the current execution of \fIbody\fR are skipped;
-processing continues by invoking the Tcl interpreter on \fInext\fR, then
-evaluating \fItest\fR, and so on.  If a \fBbreak\fR command is invoked
-within \fIbody\fR
-or \fInext\fR,
-then the \fBfor\fR command will
-return immediately.
-The operation of \fBbreak\fR and \fBcontinue\fR are similar to the
-corresponding statements in C.
-\fBFor\fR returns an empty string.
-.PP
-Note: \fItest\fR should almost always be enclosed in braces.  If not,
-variable substitutions will be made before the \fBfor\fR
-command starts executing, which means that variable changes
-made by the loop body will not be considered in the expression.
-This is likely to result in an infinite loop.  If \fItest\fR is
-enclosed in braces, variable substitutions are delayed until the
-expression is evaluated (before
-each loop iteration), so changes in the variables will be visible.
-See below for an example:
-.SH EXAMPLES
-.PP
-Print a line for each of the integers from 0 to 10:
-.PP
-.CS
-\fBfor\fR {set x 0} {$x<10} {incr x} {
-    puts "x is $x"
-}
-.CE
-.PP
-Either loop infinitely or not at all because the expression being
-evaluated is actually the constant, or even generate an error!  The
-actual behaviour will depend on whether the variable \fIx\fR exists
-before the \fBfor\fR command is run and whether its value is a value
-that is less than or greater than/equal to ten, and this is because
-the expression will be substituted before the \fBfor\fR command is
-executed.
-.PP
-.CS
-\fBfor\fR {set x 0} $x<10 {incr x} {
-    puts "x is $x"
-}
-.CE
-.PP
-Print out the powers of two from 1 to 1024:
-.PP
-.CS
-\fBfor\fR {set x 1} {$x<=1024} {set x [expr {$x * 2}]} {
-    puts "x is $x"
-}
-.CE
-.SH "SEE ALSO"
-break(n), continue(n), foreach(n), while(n)
-.SH KEYWORDS
-boolean, for, iteration, loop
-'\" Local Variables:
-'\" mode: nroff
-'\" End: