This is makeindex, version 2.13 [07-Mar-1997] (using kpathsea).
Scanning style file /usr/share/texmf/makeindex/latex/gglo.ist........
** Input style error (file = /usr/share/texmf/makeindex/latex/gglo.ist, line = 58):
   -- Unknown specifier lethead_prefix.
** Input style error (file = /usr/share/texmf/makeindex/latex/gglo.ist, line = 59):
   -- Unknown specifier lethead_suffix.
** Input style error (file = /usr/share/texmf/makeindex/latex/gglo.ist, line = 60):
   -- Unknown specifier lethead_flag.
......done (14 attributes redefined, 3 ignored).
Scanning input file leaflet.glo....done (7 entries accepted, 0 rejected).
Sorting entries....done (22 comparisons).
Generating output file leaflet.gls....done (22 lines written, 0 warnings).
Output written in leaflet.gls.
Transcript written in leaflet.ilg.