NAME
	  checknr - Checks nroff and troff files

     SYNOPSIS
	  checknr [-fs]	[-a.x1.y1.x2.y2	... .xn.yn] [-c.x1.x2.x3 ...
	  .xn] [file ...]

	  The checknr command checks a list of nroff or	troff input
	  files	(see RELATED INFORMATION) for certain kinds of errors
	  involving mismatched opening and closing delimiters and
	  unknown commands.

     FLAGS
	  -a.x1.y1.x2.y2 ... .xn.yn
	       Adds pairs of macros to the list.  This flag must be
	       followed	by groups of six characters, each group	defin-
	       ing a pair of macros.  The six characters are a period,
	       the first macro name, another period, and the second
	       macro name.  For	example, to define a pair .BS and .ES,
	       use -a.BS.ES.  (You cannot use the -a flag to define a
	       1-character macro name.)

	  -c.x1.x2.x3 ... .xn
	       Defines otherwise undefined commands.

	  -f   Causes checknr to ignore	\f font	changes.

	  -s   Causes checknr to ignore	\s size	changes.

     DESCRIPTION
	  If no	files are specified, checknr checks the	standard
	  input.  Delimiters checked are as follows:

	  o    Font changes using \fx ... \fP.

	  o    Size changes using \sx ... \s0.

	  o    Macros that come	in open/close forms (for example, the
	       .TS and .TE macros), which must always come in pairs.

	  The checknr command can handle both the ms and me macro
	  packages.

	  The checknr command is intended to be	used on	documents that
	  are prepared with checknr in mind, much the same as lint.
	  It expects a certain document	writing	style for \f and \s
	  commands, in that each \fx must be terminated	with \fP and
	  each \sx must	be terminated with \s0.	 While it will work to
	  go directly into the next font or explicitly specify the
	  original font	or point size, and many	existing documents
	  actually do this, such a practice produces error messages
	  from checknr.
	  The checknr command does not recognize certain reasonable
	  constructs, such as conditionals.

     RELATED INFORMATION
	  The nroff, troff, tbl, deroff, eqn, neqn, checkeq, and
	  checkmm commands may be available on your system, but	are
	  not provided with OSF/1.