opendarwin man page for concat

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

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NAME
       concat - Join lists together

SYNOPSIS
       concat ?arg arg ...?
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DESCRIPTION
       This  command  joins  each  of its arguments together with spaces after trimming leading and trailing spaces from each of them.	If all the
       arguments are lists, this has the same effect as concatenating them into a single list.	It permits any number of arguments.  For  example,
       the command
	      concat a b {c d e} {f {g h}}
       will return
	      a b c d e f {g h}
       as its result, and
	      concat " a b {c	" d "  e} f"
       will return
	      a b {c d e} f
       as its result.

       If no args are supplied, the result is an empty string.

SEE ALSO
       append(n), eval(n)

KEYWORDS
       concatenate, join, lists

Tcl									8.3								 concat(n)