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include "delayed_updating/syntax/prototerm_constructors.ma".
-include "delayed_updating/syntax/prototerm_equivalence.ma".
+include "delayed_updating/syntax/prototerm_eq.ma".
include "delayed_updating/notation/functions/class_d_phi_0.ma".
include "ground/xoa/or_5.ma".
include "ground/xoa/ex_3_1.ma".