checknr - Checks nroff files
checknr [-fs] [-a.x1.y1.x2.y2 ... .xn.yn] [-c.x1.x2.x3 ... .xn] [file...]
The checknr command checks a list of nroff input files for certain kinds of
errors involving mismatched opening and closing delimiters and unknown com-
-a.x1.y1.x2.y2 ... .xn.yn
Adds pairs of macros to the list. This option must be followed by
groups of six characters, each group defining 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 option to define a 1-character macro
-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.
If no files are specified, checknr checks the standard input. Delimiters
checked are as follows:
+ Font changes using \fx ... \fP.
+ Size changes using \sx ... \s0.
+ 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
Commands: deroff(1), neqn(1), nroff(1), tbl(1)