Side-by-side comparisons, part 1

This shows off a side-by-side comparison between similar examples -
several test viewers made the comment that it would be useful to see
samples side-by-side, so here it is.
Nicer output areas
Numbering buttons, expanding code sections

for readability and conciseness.
Side-by-side event queue snippets
More side-by-side snippets
A whole bunch more side-by-side panes

One concern is that the text will now be too small for the presentation,
but we'll cross that bridge when we come to it...
Increase side-by-side font-size

This is about all the font-size we can get.  We should test this with
1024x768 - it's possible that we'll need to shrink text some more.
Side-by-side DIY promises/event dispatcher