Small English usage nits.
diff --git a/Doc/lib/liblinecache.tex b/Doc/lib/liblinecache.tex
index 868ec6d..fb71d7a 100644
--- a/Doc/lib/liblinecache.tex
+++ b/Doc/lib/liblinecache.tex
@@ -1,14 +1,17 @@
\section{\module{linecache} ---
- Treat files like lists of lines}
+ Random access to text lines}
\declaremodule{standard}{linecache}
\sectionauthor{Moshe Zadka}{mzadka@geocities.com}
-\modulesynopsis{This module treats files like random-access lists of lines.}
+\modulesynopsis{This module provides random access to individual lines
+ from text files.}
The \module{linecache} module allows one to get any line from any file,
while attempting to optimize internally, using a cache, the common case
-where many lines are read from a file.
+where many lines are read from a single file. This is used by the
+\refmodule{traceback} module to retrieve source lines for inclusion in
+the formatted traceback.
The \module{linecache} module defines the following functions:
@@ -17,19 +20,19 @@
will never throw an exception --- it will return \code{''} on errors.
If a file named \var{filename} is not found, the function will look
-for it in the module search path.
+for it in the module\indexiii{module}{search}{path} search path,
+\code{sys.path}.
\end{funcdesc}
\begin{funcdesc}{clearcache}{}
-Clear the cache. You might want to use this function if you know that
-you do not need to read lines from many of files you already read from
-using this module.
+Clear the cache. Use this function if you know that you do not need
+to read lines from many of files you already read from using this
+module.
\end{funcdesc}
\begin{funcdesc}{checkcache}{}
-Check the cache is still valid. You might want to use this function if
-you suspect that files you read from using this module might have
-changed.
+Check the cache for validity. Use this function if files in the cache
+may have changed on disk, and you require the updated version.
\end{funcdesc}
Example: