Additional information available:

WINDOW

   Enlarges the current window.

   Format

     ENLARGE WINDOW  line-count

Additional information available:

Parameter

line-count
   Specifies the number of screen lines you want to add to the
   current window. If you do not supply this parameter, LSE prompts
   you for the number of lines to add.

   The maximum size of a window depends on the size and type of the
   terminal screen you are using. The minimum size is one line of
   text and one line for the status line.