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Annotation of 42BSD/usr.lib/learn/eqn/L2.1b, revision 1.1

1.1     ! root        1: #print
        !             2: Since spaces are thrown away, what do you do when
        !             3: you want spaces? The answer is that you have to ask for
        !             4: them explicitly.
        !             5: If you type a "~" (tilde) it will be replaced by a space
        !             6: on output; use one tilde for each space.
        !             7: Thus to get
        !             8: a + b
        !             9: you need
        !            10: .EQ
        !            11: a~+~b
        !            12: .EN
        !            13: 
        !            14: Modify the equation in file "Example" so there is one space
        !            15: around each of the operators =, + and -, so it looks like
        !            16: 
        !            17: a = b + c - d
        !            18: 
        !            19: Print it with neqn and nroff -ms to verify it.
        !            20: Type "ready" when done.
        !            21: #once #create Ref
        !            22: .PP
        !            23: You probably thought you were done with this ridiculous
        !            24: example of just
        !            25: .EQ
        !            26: a ~=~
        !            27: b ~+~ c
        !            28: ~-~d
        !            29: .EN
        !            30: Sorry, but you will probably even see it again.
        !            31: .pl 1
        !            32: #once neqn Ref | nroff >X1 &
        !            33: #once #create Example
        !            34: .PP
        !            35: You probably thought you were done with this ridiculous
        !            36: example of just
        !            37: .EQ
        !            38: a =
        !            39: b + c
        !            40: -d
        !            41: .EN
        !            42: Sorry, but you will probably even see it again.
        !            43: .pl 1
        !            44: #user
        !            45: neqn Example | nroff >X2
        !            46: #cmp X1 X2
        !            47: #log
        !            48: #next
        !            49: 2.1c 10
        !            50: 2.2b 5

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