deletions | additions       diff --git a/layout.md b/layout.md  index fa7f6d4..0c71a58 100644  --- a/layout.md  +++ b/layout.md 
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Intro.tex  Equation.tex  Parameters.tex  Fp.tex  Box.tex  How common are planets1.tex  figures/Drake3/Drake_Annotated.jpg  Fp.tex  Ne.tex  Space broadcasting.tex  figures/Kepler_spacecraft/Kepler_spacecraft.jpg