The purpose of the UD Annotatrix is to provide interfaces to the current visualiser tool that allows dependency graphs to be modified. The point of this is to make manual editing of dependency corpora much quicker.
See examples of UD graphs using the same library as the visualiser currently does use and as the annotatrix will use.
Note that something similar exists in brat (example), but that we're aiming for a simpler, cleaner, faster interface that has no server-side component. Everything should be in javascript.
Documentation of the changes made by Tai can be found at: https://wikis.swarthmore.edu/ling073/User:Twarner2/Final_project