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Iam writing my thesis in r markdown and want to change the line spacing to 18 pt. But i cant find a solution for it. I only found the setting for onehalf spacing or 1.5 spacing but no for exactly some arbitrary pt.

marked as duplicate by Troy, Mico, Phelype Oleinik, Stefan Pinnow, Zarko Aug 21 '18 at 14:49

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There is a small package for specifying explicit leading in any unit you want: The leading package. You use it by including \usepackage{leading} in your preamble and then issuing \leading{18pt} before the body text. This package essentially does the thing that @egreg did in this answer here (not in LaTeX3 syntax though).

Here is an example:

\textbf{10.95\,pt text on 18\,pt leading}: \blindtext

18 pt leading

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