deletions | additions       diff --git a/layout.md b/layout.md  index 15d4ceb..54a4b52 100644  --- a/layout.md  +++ b/layout.md 
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figures/129 car/129 car.PNG  begin_itemize_item_Petrol_is__.tex  figures/131 photochemical smog/131 photochemical smog.PNG  subsubsection_Tackling_Emissions_Limits_have__.tex subsection_DF11_subsubsection_Alternative_Hydrocarbon__.tex