15.64.61.9  SIZE   - SIZE=n  gives  the approximate spacing between chars.
in tenths of an inch.  If n is negative hardware characters will  be  used
when  available.   If  n is positive software characters will be used when
mode  VECTOR=OFF.   This  size  determines   the   title   size   when   a
TOP,BOTTOM,...   title  is specified.  The TOP title is normally 1.5 times
this value.  Normally the size is automatically set according to the paper
size,  and  window  to give you pleasing results.  The SIZE applies to all
titles LEFT...TOP.  The units may be modified by SET UNITS CHARACTER.
(Default:2)