typos, layout and other small things
diff --git a/Doc/lib/libposix.tex b/Doc/lib/libposix.tex
index fa0b42d..71798a4 100644
--- a/Doc/lib/libposix.tex
+++ b/Doc/lib/libposix.tex
@@ -16,7 +16,8 @@
\stmodindex{os}
The descriptions below are very terse; refer to the
-corresponding \UNIX{} manual entry for more information.
+corresponding \UNIX{} manual entry for more information. Arguments
+called \var{path} refer to a pathname given as a string.
Errors are reported as exceptions; the usual exceptions are given
for type errors, while errors reported by the system calls raise
@@ -340,7 +341,7 @@
a tuple containing its pid and exit status indication (encoded as by
\UNIX{}). The semantics of the call are affected by the value of
the integer options, which should be 0 for normal operation. (If the
-system does not support waitpid(), this always raises
+system does not support \code{waitpid()}, this always raises
\code{posix.error}. Not on MS-DOS.)
\end{funcdesc}