Question about a responsum of the Rambam
I am preparing a responsum of the Rambam for a class that I am teaching and am quite perplexed about something. The responsum is no. 148 in ed. Blau. When I look at the responsum as it appears in the Bar-Ilan Responsa Project there are a number of notes which are inserted into the text which aren’t found in the Blau edition, specifically the long note which begins after “כמו שנתבאר בברייתא”. Does anybody know where this note is from? Is it from a different edition of Blau than what I have? At the end of the note is “Y. Levinger“, did Bar-Ilan have him add more notes? Thanks for any help.