deletions | additions       diff --git a/layout.md b/layout.md  index 1823f76..84bf60e 100644  --- a/layout.md  +++ b/layout.md 
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Intro1.tex  figures/Drake4/Drake1.jpg  Intro.tex  Equation.tex How common are planets1.tex  figures/Drake3/Drake_explained.png  Parameters.tex  Fp.tex