deletions | additions       diff --git a/layout.md b/layout.md  index ba38ea5..4e85132 100644  --- a/layout.md  +++ b/layout.md 
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1-Introduction.tex  2-Framework.tex  2-Structure.tex  subsection_Units_and_physical_constants__.tex 2-Units.tex  2-Coordinates.tex  subsection_Data_Access_label_sec__.tex  Visualization.tex