Dave has finished adding the glossary function to 1999.io just like it works in Fargo .  You need to reload 1999.io after you first enter the glossary URL in Settings as it looks like the glossary entries are loaded when 1999.io starts. 

For Fargo users, I created a new glossary file in Fargo, copied the glossary items from the #glossary section of my cmsPrefs, promoted the entries to the top level and then saved the file. Next click File, Get Public Link, copy the link to the clipboard, go to 1999.io and past the URL in to the glossary field of the Misc settings. 

The approach above allows me to use Fargo to directly edit and save my glossary file without having to transfer it to my server hosting my instance of 1999.io, but it does mean that Dropbox has to be up in order for the glossary file to load.