Current Segmentation Configuration Window consists of two main sections: (Language) Sets and Segmentation Rules.
Segmentation Rules list consists of 3 columns: (1) Break/Exception, (2) Pattern Before, (3) Pattern After
I suggest adding 2 more columns here:
(1) Enable/Disable (which allows "commenting out" some rules on the file for use in other projects)
(2) Description (a brief information about the functioning of each rule might be useful for users, especially if they can have access to a collection of segmentation rules developed by more experienced users)