V3/man/man1/ov.1

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.he 'OV (I)'6/12/72'OV (I)'
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NAME		ov -- overlay pages
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SYNOPSIS	ov__ [ file ]
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DESCRIPTION	ov__
is a postprocessor for producing double column formatted
text when using nroff(I).
ov__
literally overlays successive pairs of 66-line pages.

If the file argument is missing,
the standard input is used.
Thus ov__ may be used as a filter.
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FILES		none
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SEE ALSO	nroff(I), pr(I)
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DIAGNOSTICS	none
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BUGS		Other page lengths should be permitted.