deletions | additions       diff --git a/layout.md b/layout.md  index 748de2a..e05847c 100644  --- a/layout.md  +++ b/layout.md 
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Laboratory Procedure.tex  begin_lstlisting_language_C_define__.tex  begin_lstlisting_language_C_define__1.tex  begin_lstlisting_language_C_define__2.tex