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The @3PROGRAMEXAMPLE@1 Environment.

@3PROGRAMEXAMPLE@1 is like @3EXAMPLE@1 except that
the margins of the processed output are not
widened. This makes @3PROGRAMEXAMPLE@1 extremely
useful for samples of computer input, output
or program, eg:

@3@@PROGRAMEXAMPLE<
C THIS IS A SHORT PROGRAM
      PRINT *,' HELLO'
      STOP
      END
>

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R.HARE, TRAINING GROUP, ERCC, 59 GEORGE SQUARE. SCRIBE 3 SLIDE 6.
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