How do I specify a metatext/description for a section?

Question

I want to add like a meta text or a description for my sections. E.g.

\section{Components}
In this section I am going to write a little about the components in the system.


Main text about components comes here...

Answer 1

You can define a new environment like this:

\newenvironment{sectionmeta}%
{\textbf{$\hookrightarrow$}\begin{itshape}}
{\end{itshape}}

and use it in your .tex file like this:

\section{Components}

\begin{sectionmeta}
In this section I am going to write a little about the components in the system.
\end{sectionmeta}
\vspace{5mm}
\par \lipsum[1]