deletions | additions       diff --git a/layout.md b/layout.md  index 6940dcf..1ac5ad0 100644  --- a/layout.md  +++ b/layout.md 
...
figures/Drake4/Drake_Equation.jpg  Intro1.tex  Intro.tex  Intro1.tex  Equation.tex  figures/Drake3/Drake_Annotated.jpg  Parameters.tex