This is makeindex, version 2.15 [MiKTeX 21.6.28].
Scanning input file GradualeMonasterienseParsSecunda-Grad.idx....done (39 entries accepted, 0 rejected).
Sorting entries....done (211 comparisons).
Generating output file GradualeMonasterienseParsSecunda-Grad.ind....done (84 lines written, 0 warnings).
Output written in GradualeMonasterienseParsSecunda-Grad.ind.
Transcript written in GradualeMonasterienseParsSecunda-Grad.ilg.