[Commentor] LC-395 Charles McCathieNevile on behalf of Opera Software [Comment] BP Not covered: 2. Identify word breaks. (This is related to the previous point) Long words which can be broken should include useful information about appropriate points to do so by including a ­ or similar. display options, it seriously reduces legibility of content, often at a cost of some extra processing. [Commentor reply] yes [Working Group decision] 
We think this would be a better fit for a technique rather than a specific best practice. A technique has been started in: link