#once #create message
.ND
.PP
Subscripts and superscripts can appear in the same equation,
and any subscripted or superscripted thing can have
a subscript or superscript.
For example, you can say

   .EQ
   x sub i sub j ~+~ y sup i sup j
   .EN

to get
.EQ
x sub i sub j ~+~ y sup i sup j
.EN
Modify "Example" to produce the following output, then type "ready".
.pl 1
#once #create Ref
.LP
.EQ
2 sup 2 sup 2 sup 2 ~=~ 65536
.EN
.pl 1
#once #create Example
.LP
.EQ
xxx
.EN
#
#once neqn Ref | nroff >X1 &
#once neqn message Ref | nroff -T$term %s/tinyms -
#user
neqn Example | nroff >X2
#cmp X1 X2
#log
#next
3.1d 10
3.2c 5