This is makeindex, version 2.15 [MiKTeX 2.9.7000 64-bit] (kpathsea + Thai support).
Scanning input file main.idx....done (3 entries accepted, 0 rejected).
Sorting entries....done (5 comparisons).
Generating output file main.ind....done (15 lines written, 0 warnings).
Output written in main.ind.
Transcript written in main.ilg.