OpenDarwin 7.2.1 - man page for join (opendarwin section n)

join(n) 			      Tcl Built-In Commands				  join(n)

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NAME
       join - Create a string by joining together list elements

SYNOPSIS
       join list ?joinString?
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DESCRIPTION
       The  list  argument  must  be a valid Tcl list.	This command returns the string formed by
       joining all of the elements of list together with joinString separating each adjacent pair
       of elements.  The joinString argument defaults to a space character.

SEE ALSO
       list(n), lappend(n)

KEYWORDS
       element, join, list, separator

Tcl											  join(n)