README revision 266527 
1234353SdimKnown Problems with some *roff versions
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3193323SedIf you encounter the error:
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5193323SedUnknown escape sequence in input: 33, 133
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7193323Sedwhen trying to create op.txt then set the GROFF_NO_SGR environment
8193323Sedvariable (see grotty(1) man page), e.g.,
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10193323Sedcsh% setenv GROFF_NO_SGR 1
11193323Sedsh$ GROFF_NO_SGR=1; export GROFF_NO_SGR
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13193323Sed$Id: README,v 8.1 2004-07-20 20:25:10 ca Exp $
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