Memoir class: turn off section numbering but still have header

Question

Trying to get rid of auto display of section numbers within text (section title only), but still have a header that gives the section title (also sans number). Can't seem to find this in memoir docs. In other words, I want some of the behavior of \section and some of \section*

Answer 1

Set \setsecnumformat to be empty (this suppresses the numbering for the titles in the body) and redefine \sectionmark appropriately (to suppress the numbering from the headings); for example:

\documentclass{memoir}
\usepackage{lipsum}

\setsecnumformat{}
\def\sectionmark#1{\markboth{#1}{#1}}

\begin{document}

\section{Test section}
\lipsum[1-20]

\end{document}

Answer 2

If you want to turn off numbering for \sections and all lower levels of heading, then place this in your preamble:

\setsecnumdepth{chapter}

\section and \section* will continue to work as advertised, but simply without any numbering.

Answer 3

Just add \setsecnumformat{} to the preamble of your document. That'll do. (See p.107 of memman, the Memoir Class manual, for details.)