deletions | additions       diff --git a/layout.md b/layout.md  index 5f60629..43f32b6 100644  --- a/layout.md  +++ b/layout.md 
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section_Prepositioning_of_emergency_items__.tex  section_Stochastic_Optimization_for_Natural__.tex  section_Pre_positioning_of_emergency__.tex  section_Pre_positioning_planning_for__.tex