that was very interesting and elegant
However, you don't pick up all the MSS citing John
many of manuscripts that are witness John are indicated by the witness "e" reference
I think to find all the witnesses to john you need to open another tab with the NA28 apparatus and
then search the witness field for "eap <OR> e <OR> ea <OR> eapr"
you can then open a third tab and use the <MERGE> command to combine the two searches " [MERGE Nestle-Aland 28 Apparatus] <OR> [MERGE Nestle-Aland 28 Apparatus 2]"
(-sorry I can't see how to paste my screenshots)