so, from an easy-to-author z.m.l. master-file, you get out:

1.  nice-looking .pdf, customized to your preferences...
2.  nice-looking .html, customized to your preferences...
3.  nice-looking .epub, customized to your preferences...
4.  nice-looking .mobi, customized to your preferences...

all by setting your preferences, and then clicking a button,
and then drag-n-dropping some files...  simpler than pie.

or, if you are using a mac or windows or linux machine to
do all this, you can also just use that z.m.l. file in the app
which handles them -- i.e., the same app which is doing
all these conversions -- which _also_ renders the e-book
according to your preferences, such that you don't even
need all those stupid conversions to other, worse, formats.

once your hand-held machines support the z.m.l. format,
you won't need those other inferior formats _there_ either.

and you'll wonder why you ever did...

-bowerbird