diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index b6e470d..96439cc 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -974,12 +974,20 @@
 						  specialization/generalization:
 							- participation constraints :-> Determines whether every member in superclass
 							  must participate as a member of a subclass.
-								- May be {{c1 mandatory}} or {{c1 optional}}. #flashcard
+								- May be mandatory or optional. #flashcard
 								  id:: 648960d0-ae7f-4452-a1b9-cab8a9b13443
+									- Mandatory: member of superclass must be
+									  member of subclass
+									- Optional: member of superclass may be member
+									  of subclass.
 							- disjoint constraints :-> Describes relationship between members of the
 							  subclasses and indicates whether member of a
 							  superclass can be a member of one, or more than
-							  one, subclass.
+							  one, subclass. #flashcard
+								- Disjoint: member of superclass is member of at
+								  most one subclass
+								- Disjoint: member of superclass is member of at
+								  most one subclass
 					- Superclass / Subclass
 						- Superclass :-> An entity type that includes one or more distinct
 						  id:: 64895f2f-b868-46ec-9d80-7079eaf3197d