Rewrite exhortation to use long options.
@subsection Parsing Long Options
To accept GNU-style long options as well as single-character options,
-use the function @code{getopt_long} instead of @code{getopt}. You
-should do this in every program that uses options, for it takes little
-extra work and helps beginners remember how to use the program.
+use @code{getopt_long} instead of @code{getopt}. You should make every
+program accept long options if it uses any options, for this takes
+little extra work and helps beginners remember how to use the program.
@comment getopt.h
@comment GNU