I've now ordered and divided the affix.xml file. First, I sequenced the entries in the affix.xml file by @xml:id attribute, using our Moses collation. (You can use a collation through the normal Saxon mechanism in oXygen if you add the jar file as an extension in the oXygen transformation scenario.) Then I split the file into four roughly equal-length files, using initial-letter boundaries in the @xml:ids.

I've documented my changes in the revisionDesc, but ECH will have to update the TODO comment; part of it now only relates to one file, and the other half is problematic because it refers to a particular line number. There's also the issue of knowing which entries have been checked against the original cards and which haven't, now they've been re-ordered.