comment a para of code in latex code example

Example 1: latex long comments

\documentclass{article}
\usepackage{verbatim}	%You can use long comments from this package
\begin{document}
    This text will be displayed
\begin{comment}
    This text will not be displayed.
\end{comment}
\end{document}

Example 2: comment in latex

%this is a comment (use percent sign %)