latex subsectionnonum code example
Example 1: non numbered section latex aticle
\section*{Introduction}
\markright{}
\addcontentsline{toc}{section}{Introduction}
Example 2: non numbered section latex aticle
\section*{Your section title}
\section*{Introduction}
\markright{}
\addcontentsline{toc}{section}{Introduction}
\section*{Your section title}