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-'\"
-'\" Copyright (c) 1993 The Regents of the University of California.
-'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\" 
-'\" RCS: @(#) $Id: foreach.n,v 1.2 1998/09/14 18:39:52 stanton Exp $
-'\" 
-.so man.macros
-.TH foreach n "" Tcl "Tcl Built-In Commands"
-.BS
-'\" Note:  do not modify the .SH NAME line immediately below!
-.SH NAME
-foreach \- Iterate over all elements in one or more lists
-.SH SYNOPSIS
-\fBforeach \fIvarname list body\fR
-.br
-\fBforeach \fIvarlist1 list1\fR ?\fIvarlist2 list2 ...\fR? \fIbody\fR
-.BE
-
-.SH DESCRIPTION
-.PP
-The \fBforeach\fR command implements a loop where the loop
-variable(s) take on values from one or more lists.
-In the simplest case there is one loop variable, \fIvarname\fR,
-and one list, \fIlist\fR, that is a list of values to assign to \fIvarname\fR.
-The \fIbody\fR argument is a Tcl script.
-For each element of \fIlist\fR (in order
-from first to last), \fBforeach\fR assigns the contents of the
-element to \fIvarname\fR as if the \fBlindex\fR command had been used
-to extract the element, then calls the Tcl interpreter to execute
-\fIbody\fR.
-.PP
-In the general case there can be more than one value list
-(e.g., \fIlist1\fR and \fIlist2\fR),
-and each value list can be associated with a list of loop variables
-(e.g., \fIvarlist1\fR and \fIvarlist2\fR).
-During each iteration of the loop
-the variables of each \fIvarlist\fP are assigned
-consecutive values from the corresponding \fIlist\fP.
-Values in each \fIlist\fP are used in order from first to last,
-and each value is used exactly once.
-The total number of loop iterations is large enough to use
-up all the values from all the value lists.
-If a value list does not contain enough
-elements for each of its loop variables in each iteration,
-empty values are used for the missing elements.
-.PP
-The \fBbreak\fR and \fBcontinue\fR statements may be
-invoked inside \fIbody\fR, with the same effect as in the \fBfor\fR
-command.  \fBForeach\fR returns an empty string.
-.SH EXAMPLES
-.PP
-The following loop uses i and j as loop variables to iterate over
-pairs of elements of a single list.
-.DS
-set x {}
-foreach {i j} {a b c d e f} {
-    lappend x $j $i
-}
-# The value of x is "b a d c f e"
-# There are 3 iterations of the loop.
-.DE
-.PP
-The next loop uses i and j to iterate over two lists in parallel.
-.DS
-set x {}
-foreach i {a b c} j {d e f g} {
-    lappend x $i $j
-}
-# The value of x is "a d b e c f {} g"
-# There are 4 iterations of the loop.
-.DE
-.PP
-The two forms are combined in the following example.
-.DS
-set x {}
-foreach i {a b c} {j k} {d e f g} {
-    lappend x $i $j $k
-}
-# The value of x is "a d e b f g c {} {}"
-# There are 3 iterations of the loop.
-.DE
-.SH KEYWORDS
-foreach, iteration, list, looping