UserString section:

Small cleanups noted by Detlef Lannert
<lannert@lannert.rz.uni-duesseldorf.de>.

Make the spelling of Unicode always uppercase.

Doc/lib/libuserdict.tex

@@ -82,23 +82,22 @@ can add new behaviours to strings.
 The \module{UserString} module defines the \class{UserString} class:
 
 \begin{classdesc}{UserString}{\optional{sequence}}
-Return a class instance that simulates a string or an unicode string object.
-The instance's content is kept in a regular string or unicode string
+Return a class instance that simulates a string or a Unicode string object.
+The instance's content is kept in a regular string or Unicode string
 object, which is accessible via the
 \member{data} attribute of \class{UserString} instances.  The instance's
 contents are initially set to a copy of \var{sequence}.
-\var{sequence} can be either a regular Python string or unicode string,
+\var{sequence} can be either a regular Python string or Unicode string,
 an instance of \class{UserString} (or a subclass) or an arbitrary sequence
 which can be converted into a string.
-supporting.
 \end{classdesc}
 
 In addition to supporting the methods and operations of string  or
-unicode objects (see section \ref{typesseq}), \class{UserString} instances
+Unicode objects (see section \ref{typesseq}), \class{UserString} instances
 provide the following attribute:
 
 \begin{memberdesc}{data}
-A real Python string or unicode object used to store the content of the
+A real Python string or Unicode object used to store the content of the
 \class{UserString} class.
 \end{memberdesc}