This is makeindex, version 2.15 [MiKTeX 21.6.28].
Scanning input file GradualeMonasterienseParsSecunda-Intr.idx....done (39 entries accepted, 0 rejected).
Sorting entries....done (245 comparisons).
Generating output file GradualeMonasterienseParsSecunda-Intr.ind....done (82 lines written, 0 warnings).
Output written in GradualeMonasterienseParsSecunda-Intr.ind.
Transcript written in GradualeMonasterienseParsSecunda-Intr.ilg.