Option variable
negsumdispflag
Default value: true
When negsumdispflag
is true
, x - y
displays as x - y
instead of as - y + x
. Setting it to false
causes the special check in
display for the difference of two expressions to not be done. One
application is that thus a + %i*b
and a - %i*b
may both be displayed the
same way.