Note that "Unicode" is always capitalized.

Doc/doc/doc.tex

@@ -882,6 +882,10 @@ distribution, to create or maintain whole documents or sections.
     \item[Python]
 	The name of our favorite programming language is always
 	capitalized.
+
+    \item[Unicode]
+	The name of a character set and matching encoding.  This is
+        always written capitalized.
   \end{description}