Annotation of 43BSD/usr.lib/learn/eqn/L12.1c, revision 1.1

1.1     ! root        1: #once #create message
        !             2: .ND
        !             3: .tr %$
        !             4: .EQ
        !             5: delim $$
        !             6: .EN
        !             7: .LP
        !             8: Of course the thing with bars or braces around it can
        !             9: still be part of larger expressions: the input
        !            10:    .EQ
        !            11:    left | {a over b ~+~ c over d} over 2 right | over a+b+c+d
        !            12:    .EN
        !            13: produces
        !            14: .EQ
        !            15: left | {a over b ~+~ c over d} over 2 right | over a+b+c+d
        !            16: .EN
        !            17: 
        !            18: For practice, modify file "Example" so it produces output
        !            19: that looks like this, then type "ready".
        !            20: .pl 1
        !            21: #once #create Ref
        !            22: .LP
        !            23: .EQ
        !            24: left |
        !            25: {a over b ~+~ c over d} over 2
        !            26: right |
        !            27: sup half
        !            28: .EN
        !            29: .pl 1
        !            30: #once #create Example
        !            31: .LP
        !            32: .EQ
        !            33: replace me
        !            34: .EN
        !            35: .pl 1
        !            36: #
        !            37: #once neqn Ref | nroff >X1 &
        !            38: #once neqn message Ref | nroff -T$term %s/tinyms -
        !            39: #user
        !            40: neqn Example | nroff >X2
        !            41: #cmp X1 X2
        !            42: #log
        !            43: #next
        !            44: 12.1d 10

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