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Annotation of 42BSD/usr.lib/learn/eqn/L4.1a, revision 1.1.1.1

1.1       root        1: #once #create message
                      2: .ND
                      3: .EQ
                      4: delim $$
                      5: .EN
                      6: .LP
                      7: The next neqn word to learn is "over", which makes
                      8: fractions like
                      9: .EQ
                     10: a+b over c
                     11: .EN
                     12: In fact that line was made by
                     13:    .EQ
                     14:    a+b over c
                     15:    .EN
                     16: To begin with an easy one, reproduce
                     17: the equation below in the file "Example", then type
                     18: ready.
                     19: (To get $>=$, type ">=".)
                     20: .pl 1
                     21: #once #create Ref
                     22: .LP
                     23: .EQ
                     24: x+1 over y+1 ~>=~ x over y
                     25: .EN
                     26: .pl 1
                     27: #once #create Example
                     28: .LP
                     29: .EQ
                     30: replace me
                     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: 4.1b 10
                     42: 4.2a 5

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