Put section and page numbers in the margin with KOMA Script

Question

Using the scrartcl document class, I would like to put the section number into the page margin, as is seen for example in the famous l2tabu document. That should be easily possible with KOMA Script, but I can not find how.

Also, how can the same be done with page numbers, as is done for example in the good old LaTeX Companion?

Answer 1

The source code of l2tabu is available on CTAN. There you can read it:

\renewcommand*{\othersectionlevelsformat}[1]{%
  \makebox[0pt][r]{\csname the#1\endcsname\autodot\enskip}}

The section number is put into a box of width 0, right aligned. So it runs into the left margin.