Scribal abbreviation
en.wikipedia.org
en.wikipedia.org
It was very frustrating, as at that time finding information on these ligatures was difficult at best. I had to work out most of it on my own.
It is theoretically possible to design fonts that convert sequences of characters into ligatures that look like the scribal abbreviations, but I see no value in that. The point is to make the material accessible and searchable in electronic form, not to create a one-to-one facsimile.
This article exposed folks to the images of the manuscripts, which use the abbreviations.