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Annotation of 42BSD/usr.lib/learn/eqn/L3.1c, revision 1.1.1.1

1.1       root        1: #once #create message
                      2: .ND
                      3: .PP
                      4: Subscripts and superscripts can appear in the same equation,
                      5: and any subscripted or superscripted thing can have
                      6: a subscript or superscript.
                      7: For example, you can say
                      8: 
                      9:    .EQ
                     10:    x sub i sub j ~+~ y sup i sup j
                     11:    .EN
                     12: 
                     13: to get
                     14: .EQ
                     15: x sub i sub j ~+~ y sup i sup j
                     16: .EN
                     17: Modify "Example" to produce the following output, then type "ready".
                     18: .pl 1
                     19: #once #create Ref
                     20: .LP
                     21: .EQ
                     22: 2 sup 2 sup 2 sup 2 ~=~ 65536
                     23: .EN
                     24: .pl 1
                     25: #once #create Example
                     26: .LP
                     27: .EQ
                     28: xxx
                     29: .EN
                     30: .pl 1
                     31: #
                     32: #once neqn Ref | nroff >X1 &
                     33: #once neqn message Ref | nroff -T$term %s/tinyms -
                     34: #user
                     35: neqn Example | nroff >X2
                     36: #cmp X1 X2
                     37: #log
                     38: #next
                     39: 3.1d 10
                     40: 3.2c 5

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