Small markup nits.
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index a03a7bf..f831ac8 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -1,7 +1,7 @@
\section{\module{os} ---
Miscellaneous OS interfaces}
-\declaremodule{standard}{os}
+\declaremodule{standard}{os}
\modulesynopsis{Miscellaneous OS interfaces.}
@@ -14,9 +14,9 @@
as found there. The design of all Python's built-in OS dependent
modules is such that as long as the same functionality is available,
it uses the same interface; e.g., the function
-\code{os.stat(\var{path})} returns stat information about \var{path}
-in the same format (which happens to have originated with the \POSIX{}
-interface).
+\code{os.stat(\var{path})} returns stat information about \var{path} in
+the same format (which happens to have originated with the
+\POSIX{} interface).
Extensions peculiar to a particular OS are also available through the
\module{os} module, but using them is of course a threat to
@@ -688,7 +688,7 @@
\begin{funcdesc}{system}{command}
Execute the command (a string) in a subshell. This is implemented by
calling the Standard C function \cfunction{system()}, and has the
-same limitations. Changes to \code{posix.environ}, \code{sys.stdin}
+same limitations. Changes to \code{posix.environ}, \code{sys.stdin},
etc.\ are not reflected in the environment of the executed command.
The return value is the exit status of the process encoded in the
format specified for \function{wait()}.
@@ -700,9 +700,9 @@
or other)
times, in seconds. The items are: user time, system time, children's
user time, children's system time, and elapsed real time since a fixed
-point in the past, in that order. See the \UNIX{}
-manual page \manpage{times}{2} or the corresponding Windows Platform
-API documentation.
+point in the past, in that order. See the \UNIX{} manual page
+\manpage{times}{2} or the corresponding Windows Platform API
+documentation.
Availability: \UNIX{}, Windows.
\end{funcdesc}
@@ -814,7 +814,7 @@
\begin{datadesc}{linesep}
The string used to separate (or, rather, terminate) lines on the
-current platform. This may be a single character, e.g. \code{'\e n'}
-for \POSIX{} or \code{'\e r'} for MacOS, or multiple characters,
-e.g. \code{'\e r\e n'} for MS-DOS and MS Windows.
+current platform. This may be a single character,
+e.g.\ \code{'\e n'} for \POSIX{} or \code{'\e r'} for MacOS, or multiple
+characters, e.g.\ \code{'\e r\e n'} for MS-DOS and MS Windows.
\end{datadesc}