
\documentclass[10pt,french]{article}
 
  \usepackage[utf8]{inputenc}
  \usepackage[T1]{fontenc}
  \usepackage{amsmath,amssymb,amssymb}
  \usepackage{xcolor}
 
  \pagestyle{empty}

  \makeindex

\begin{document}
An important topic\index{abc}
\index{def}
\index{xyz}
is indexed several ways.
\end{document}
