gistfile1.txt

the intention of step is so that u dont have
to recreate repetitive modifier groups, u can
instead assign a modifier group to a menu
item and assign a display order to that
modifier group.

or say you have an item like a steak that
comes with 2 side items and temperature and style,
and u can set in which order those "steps" are
displayed to the user...the user first chooses
the style, then the temperature, then side item 1,
then side item 2...