deletions | additions       diff --git a/layout.md b/layout.md  index 54ee414..9c4795d 100644  --- a/layout.md  +++ b/layout.md 
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abstract.tex  Introduction.tex  sectionConceptual_bu.tex Conceptual building blocks for modeling.tex  figures/Hierarchy_with_Notation/Hierarchy_with_Notation.png  subsectionAuxiliary_.tex  sectionPhysics_quest.tex