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Annotation of 43BSD/usr.lib/learn/eqn/L4.1d, revision 1.1

1.1     ! root        1: #once #create message
        !             2: .ND
        !             3: .LP
        !             4: You can put fractions over fractions with multiple "over"'s
        !             5: just as you can do multiple subscripts and superscripts,
        !             6: although fractions within fractions are much
        !             7: less common (probably because they are harder for
        !             8: people to read).
        !             9: Anyway, if you want, for example, something like
        !            10: .EQ
        !            11: a over b over c
        !            12: .EN
        !            13: you just type
        !            14:   .EQ
        !            15:   a over b over c
        !            16:   .EN
        !            17: 
        !            18: As a drill, change "Example" so it produces an equation
        !            19: that looks like the following one, then type "ready".
        !            20: .pl 1
        !            21: #once #create Ref
        !            22: .LP
        !            23: .EQ
        !            24: x over x+x over x+x+x
        !            25: .EN
        !            26: .pl 1
        !            27: #once #create Example
        !            28: .LP
        !            29: .EQ
        !            30: right here
        !            31: .EN
        !            32: .pl 1
        !            33: #
        !            34: #once neqn Ref | nroff >X1 &
        !            35: #once neqn message Ref | nroff -T$term %s/tinyms -
        !            36: #user
        !            37: neqn Example | nroff >X2
        !            38: #cmp X1 X2
        !            39: #log
        !            40: #next
        !            41: 5.1a

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