If no arguments are given, the command is applied to the following line
of text.
.SS Other macros and strings
-.PP
Below are other relevant macros and predefined strings.
Unless noted otherwise, all macros
cause a break (end the current line of text).
.br
.I /usr/man/whatis
.SH NOTES
-.PP
By all means include full URLs (or URIs) in the text itself;
some tools such as
.BR man2html (1)
.B v
vgrind(1)
.SH BUGS
-.PP
Most of the macros describe formatting (e.g., font type and spacing) instead
of marking semantic content (e.g., this text is a reference to another page),
compared to formats like mdoc and DocBook (even HTML has more semantic