NAME
  lappend - Append list elements onto a variable

SYNOPSIS
  lappend varName ?value value value ...?

DESCRIPTION
  This command treats the variable given by varName as a list and appends
  each of the value arguments to that list as a separate element, with
  spaces between elements. If varName doesn't exist, it is created as a
  list with elements given by the value arguments. Lappend is similar to
  append except that the values are appended as list elements rather than
  raw text. This command provides a relatively efficient way to build up
  large lists. For example, "lappend a $b" is much more efficient than
  "set a [concat $a [list $b]]" when $a is long.

EXAMPLE
  % set x {ABC DEF {GHI JKL} MNO}
  ABC DEF {GHI JKL} MNO

  % lappend x PQR STU {VWX YZ}
  ABC DEF {GHI JKL} MNO PQR STU {VWX YZ}

SEE ALSO
  lindex linsert list llength lrange lreplace lsearch lsort