From: Rob Bogus <rob23@tmr.com>
The alternative would be to group them by function, such as putting
things which affect the device (dev=, speed=, burnfree, etc) in one
group, things which affect format (-D -R -N, etc) in another, things
which affect how the content is scanned (-f, etc), information
visibility (various -hide and -hidden options), and rename options
(-graft-points, etc).
Functional grouping makes it faster to find things if you are looking
for "a way to keep long filenames" or something like that, alphabetical
is easier if you know the option and want to check what it does.
Functional grouping makes it harder for the people who need the manual
because the know little about the program.