append(3Tcl)

NAME
     append - Append to variable

SYNOPSIS
     append varName ?value value value ...?


DESCRIPTION
     Append all of the value arguments to the current value of variable
     varName.  If varName doesn't exist, it is given a value equal to the
     concatenation of all the value arguments.  This command provides an
     efficient way to build up long variables incrementally.  For example,
     ``append a $b'' is much more efficient than ``set a $a$b'' if $a is long.


KEYWORDS
     append, variable