deletions | additions       diff --git a/layout.md b/layout.md  index dc90045..a3b1a6c 100644  --- a/layout.md  +++ b/layout.md 
...
section_Question_3__.tex  textit_On_arc_consistency_begin__.tex  textit_On_constraint_graph_begin__.tex  subsection_Constraint_Graph_Assuming_that__.tex  subsection_A_B_Since_A__.tex