can be expressed as
assuming the elements are not contractions. This is analogous to CLDR's <pc>
"<", "<<", "<<<", and "=" will all be supported.
in progress, and data using this syntax backed out of ICU 4.4; ok to keep open for 4.6 work?
we will also work to implement ranges, such as &a<b<c<d<e<k<l<u<v<w<x as &a<*b-e<k<l<u-x
Milestone 4.5.1 deleted