W
ell_
Q
uasi_
O
rders
Infinite_Sequences
Minimal_Elements
Least_Enum
Almost_Full
Minimal_Bad_Sequences
Higman_OI
Almost_Full_Relations
Well_Quasi_Orders
Kruskal
Kruskal_Examples
Wqo_Instances
Multiset_Extension
Wqo_Multiset