New Post: Layers OptimizeTransparency effect?

I'd like to know how to optimize my generated gif files based on layer transparency. This is super important because it can, in one line, roughly halve the size of most gif files at zero loss.

If possible, I'd also like to know how to adjust fuzz factor as this can further decrease gif size at small losses.

And while we're at it, global colour maps.

http://www.imagemagick.org/Usage/anim_opt/#opt_trans
http://www.imagemagick.org/Usage/color_basics/#fuzz
http://www.imagemagick.org/script/command-line-options.php?#map

So for example the line...

convert input.gif -fuzz 5% -layers OptimizeTransparency +map output.gif