Section 10.5 of the LaTeX Beamer manual specifies the different options for generating a table of contents. One of them is:
firstsection=⟨section number⟩specifies which section should be numbered as section “1.” This isuseful if you have a first section (like an overview section) that should not receive a number. Sectionnumbers are not shown by default. To show them, you must install a different table of contentstemplates.
There is a similar option lastsection. In my case, however, I need an unnumbered section in the middle of my sections, not the start or the end. The following is a photoshopped mock-up (a tock-up, if you will) of what I mean:
It's acceptable if you redefine \section* in your answer, as I want all \sections and \section*s to be shown in the TOC and \section*'s only default purpose is precisely not to be shown in TOC. Hence, the above mock-up could result from the following MWE:
\documentclass{beamer}\usetheme{Antibes}\usebeamercolor{dolphin}\begin{document} \begin{frame} \tableofcontents \end{frame} \section*{Intro} \section{First section} \section{Second section} \section*{Nope} \section{Third section} \section*{Outro} \begin{frame} \end{frame}\end{document}