<writer>.send_paragraph(): Clarify what needs to be done by this
method and what it should not do. (Specifically: handling
breaking of last line of preceeding paragraph.)
diff --git a/Doc/lib/libformatter.tex b/Doc/lib/libformatter.tex
index 9bb12b2..5d860a2 100644
--- a/Doc/lib/libformatter.tex
+++ b/Doc/lib/libformatter.tex
@@ -265,7 +265,10 @@
\begin{methoddesc}[writer]{send_paragraph}{blankline}
Produce a paragraph separation of at least \var{blankline} blank
lines, or the equivelent. The \var{blankline} value will be an
-integer.
+integer. Note that the implementation will receive a call to
+\method{send_line_break()} before this call if a line break is needed;
+this method should not include ending the last line of the paragraph.
+It is only responsible for vertical spacing between paragraphs.
\end{methoddesc}
\begin{methoddesc}[writer]{send_hor_rule}{*args, **kw}