deletions | additions       diff --git a/layout.md b/layout.md  index a3cee45..b66d490 100644  --- a/layout.md  +++ b/layout.md 
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Introduction.tex  pivot demo.html  Problems.tex  svg-example.html  figures/herding cats/herding cats.png  figures/collaboration II/collaboration II.png  Backlash2.tex