More structuring features for prosper

Hello.

Something i feel missing currently in prosper is the lack of features for 
creating a structure in a presentation, as opposed to standard LaTeX 
documents. The only available feature is the \part macro, that allows a 
one-level depth structure, which is generally not enough for me. And there 
isn't any automatic generation of the list of parts neither.

First, i'd like to create a second-level structure macro. My current idea 
about it would be to display current part first, then all of subparts, with 
current subpart highlited. Something as:
         PART 1

       subpart 1
       subpart 2
      SUBPART 3

 Here is my current attempt, which is a quick hack from prosper.cls
\makeatletter
\let\subpart=\relax
\newcommand{\subpart}[3][\@defaultTransition]{%
  \begin{slide}[#1]{}%
    \vspace*{1.5cm}\@addBookmarkOnSlide{0}{#2}%
    \begin{center}%
      \fontTitle{#2}\\%
      \bigskip%
      {\ifinColor\@fontSubtitleColor\else\@fontSubtitleBW\fi#3\par}
    \end{center}
  \end{slide}}
\makeatother

And i use it this way:
\subpart{part1}{
   subpart 1\\
   subpart 2\\
  \framebox{subpart 3}
}

As you can see, it is not optimal at all:
- I have to repeat current part name first, 
- I didn't found anything else as \framebox for highliting current subpart, as 
\textbf for instance failed (everything is done with subtitle font)

Moreover, propsper.cls has a macro for printing something with title font 
(\fontTitle) but no equivalent for subtitle font, so I had to do it manually.

Second, i'd like to have some \tableofcontents equivalent for automatically 
generating a slide with all part list. I didn't tried to implement anything 
yet however.

Any comments/improvements welcomed.
-- 
Guillaume Rousse
The school board will make a better pay offer before the teacher's union 
negotiates. 
	-- Murphy's Laws of Teaching n°12



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