[osis-core] Tables

[Harry Plantinga]

Tables will be essential at some future point. If it's not 
too hard to add them now, we might as well. HTML markup has 
proven adequate for all sorts of tables and has become an 
indispensible part of markup. 

-Harry

> Oh, what about Harry's mentioning of tables? Steve had mentioned that 
> before but do we want to reach tables in this release? If so I will 
> probably grab the HTML code for tables to insert. Crude but workable for 
> simple markup.