When this variable is set to 1 (on, true, yes) all floating windows displayed on character-based hosts are drawn with a border (box). If this variable is set to 0 (off, false, no), floating windows are drawn with a border only when the BOXED phrase appears in the statement that creates the window. The default value for this variable is 0 (off, false, no). This variable has an affect only on character-based host systems.