mlsubsection23.25ex plus 1ex minus .2ex1.5ex plus .2ex
 list_equality(level): int 
  rule.
mlsubsection23.25ex plus 1ex minus .2ex1.5ex plus .2ex
 list_equality_nil(level): int 
  rule.
list_intro_cons: rule.
list_equality_cons: rule.
mlsubsection23.25ex plus 1ex minus .2ex1.5ex plus .2ex
 list_equality_induction (over_id over using u v w): 
tok 
  term 
  term 
  tok 
  tok 
  tok 
  rule.
mlsubsection23.25ex plus 1ex minus .2ex1.5ex plus .2ex