Use the \note and \warning macros where appropriate.
diff --git a/Doc/lib/libposix.tex b/Doc/lib/libposix.tex
index 9bbc336..5da3783 100644
--- a/Doc/lib/libposix.tex
+++ b/Doc/lib/libposix.tex
@@ -85,11 +85,11 @@
export statements to the command string for \function{system()} or
\function{popen()}.
-\strong{Note:} The \refmodule{os} module provides an alternate
+\note{The \refmodule{os} module provides an alternate
implementation of \code{environ} which updates the environment on
modification. Note also that updating \code{os.environ} will render
this dictionary obsolete. Use of the \refmodule{os} for this is
-recommended over direct access to the \module{posix} module.
+recommended over direct access to the \module{posix} module.}
\end{datadesc}
Additional contents of this module should only be accessed via the