deletions | additions       diff --git a/section_Code_Listings_We_will__.tex b/section_Code_Listings_We_will__.tex  index dccae0b..c4b9b4b 100644  --- a/section_Code_Listings_We_will__.tex  +++ b/section_Code_Listings_We_will__.tex 
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\end{lstlisting}  \end{figure}  Useful to keep in mind: definitions in your \verb|header.tex| file are global to your article, while macros introduced in a paragraph are only local to that paragraph. That applies even to global commands such as \verb|\gdef|, as Authorea processes each paragraph independently of its surroundings. Toedit  \verb|header.tex|, select "Quick edit" (pencil icon) from an article's top bar, then choose "Header (LaTeX macros)".