[Tex/LaTex] Is \baselineskip automatically defined


Is \baselineskip automatically defined by LaTeX? What does it depend on?

I was going through the Wikibook section regarding lengths, and I just realized also that \bigskip and others are not dependent on the font size. Is this the same for baselineskip?

Best Answer

\baselineskip is a tex primitive, so it is always defined to be something (well unless someone goes \let\baselineskip\@undefined but even then the underlying register still has a value even if it is not accessible.

It is set in various places in LaTeX, most notably all font size commands end up executing


in which case \baselineskip gets set to bbb times the current value of \baselinestretch.

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