This is makeindex, version 2.16 [TeX Live 2022] (kpathsea + Thai support).
Scanning input file phyml-manual.idx....done (126 entries accepted, 0 rejected).
Sorting entries....done (934 comparisons).
Generating output file phyml-manual.ind....done (175 lines written, 0 warnings).
Output written in phyml-manual.ind.
Transcript written in phyml-manual.ilg.
