This section seems to be about line-breaking rules as well as hyphenation rules. I'd be inclined to move the subsection on line-breaking above this one, put most of the line-break rules in there, and keep this subsection just for additional rules related to hyphenation.
3.2 Hyphenation http://w3c.github.io/elreq/#ethiopic_hyphenation
This section seems to be about line-breaking rules as well as hyphenation rules. I'd be inclined to move the subsection on line-breaking above this one, put most of the line-break rules in there, and keep this subsection just for additional rules related to hyphenation.