"add"-tag is not implemented yet. It should be implemented as the other tags in scripting.rb. Take a look at http://git-wiki.kicks-ass.org/Scripting. The advantage of this is that it is generic. You can add rows or diagonals or whatever you want.
 
|= Description |= Value              |

django like haml blocks:
 
    def blk(name, &block)

<?php
/**
 * LaTeX Rendering Class

#!/usr/bin/env ruby
require 'yaml'