*** macros generally available in -man macros on all platforms ***

---> control macros

.TH title section [extra1(date?) [extra2(vendor?) [extra3]]]
		start a new manpage with specified data.
.SH title	section header
.SS title	subsection header

.PP, .P, .LP	start a block paragraph
.HP [i]		start a paragraph with hanging indentation of i ens
.TP [i]		start a paragraph with prevailing indentation of i, and a
		hanging tag specified by the next line.
.IP x [i]	start a paragraph with prevailing indentation of i, and a
		hanging tag specified by x, which will be displayed bold.

.DT		set tabs in .5i (1/2 inch) increments
.PD [v]		set interparagraph distance to v vertical spaces

.RS [i]		shift left margin to the right by i ens (or def. value).
.RE [k]		return to k'th indent level set with .RS (without k, pops one)

---> font change macros

.SM [text]	make text (or next line) a little smaller (1pt? 2pt?)

.B		switch to bold
.I		switch to italic
.R		switch to roman

.BR w1 w2...	sets words in bold, roman, bold, roman... without spaces.
		(.BI, .IB, .IR, .RB, .RI are similar)