deletions | additions       diff --git a/layout.md b/layout.md  index 8afdbbe..4711f27 100644  --- a/layout.md  +++ b/layout.md 
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Mode_Profile__1.tex  Effective_Index__.tex  Mode_Profile_TM__1.tex  Effective_index_TM__.tex  Equation_model_quasi_TE_mode__1.tex  subsection_Mach_Zehnder_interferometer_circuit__.tex  subsection_Two_stage_MZI_optical__.tex