Hello. I am trying to run a search in the UBS5's apparatus to determine the number of times {A}, {B}, {C}, and {D} are each used by the editors to indicate their level of certainty about textual variants. Below is a screenshot of the results I am getting. So far I have searched the forums and the search help page on the wiki, but have not yet found what I need to enter into the search bar for the curly brackets to be interpreted as literal characters. Any guidance would be greatly appreciated!
