[Tex/LaTex] Setting the column gap in a twocolumn (or multicol) document

multicolspacingtwo-column

I have a document that uses twocolumn with scrbook. How can I set the width of the space between the two columns?

Best Answer

Use \setlength{\columnsep}{<width>} in the preamble of your document, i.e. before \begin{document}.

Changing \columnsep also works if you use the multicol package.