Documented basic features.

tuos-presentation/README.md

@@ -13,9 +13,33 @@ supported by the University of Sheffield.
 * The `tuos-fonts` style (optional).
 
 ## Installation 
+* Copy the various `*.sty` and `*.cls` files into your `texmf` tree. 
 
 ## Usage
-  
+The `tuos-presentation` class (respectively, a beamer theme) is a
+customised setup of the
+[beamer class](https://www.ctan.org/pkg/beamer).  Thus, please see the
+beamer documentation for its detailed use. In general, you can either
+use the class file (i.e., `\documentclass{tuos-presentation}` or use
+`\usetheme{tuos}` in a regular beamer setup.
+
+The class/theme provides the following options:
+* `compress`: using a layout that offers more space than the default
+  layout by putting the university logo and the frame title side-by-side.
+* `colour`: for using the colour variant of The University of
+  Sheffield layout (default is the white variant). 
+* `plainfonts`: For using the standard LaTex fonts instead of the cooperate fonts of The
+  University of Sheffield. There are mainly two reasons why you want to
+  use this option:
+  * The cooperate fonts do not provide mathematical symbols. Thus, if
+    you want to write mathematical content in your letter, the LaTeX
+    fonts might be the better choice (or add a suitable LaTeX package
+    providing mathematical symbols.
+  * You do not want to fiddle with your font installation.
+    
+Moreover, a few new commands are provided that generate standard
+slides such as `\PartFrame{}`, `\ThanksFrame{}`, or `\CopyrightFrame`.
+
 ## License
 This project is dual-licensed under a 2-clause BSD-style license and/or 
 the LPPL version 1 or any later version.