New updates in light of recent screen reader issue and suggestions documented on CONTRIB-4098.
2.3 version available from https://moodle.org/plugins/pluginversion.php?id=1988 and https://github.com/gjb2048/moodle-format_topcoll/archive/V2.3.9.7.zip
2.4 version available from https://moodle.org/plugins/pluginversion.php?id=1989 and https://github.com/gjb2048/moodle-format_topcoll/archive/V2.4.1.7.zip
Cheers,
Gareth