src/HOL/Subst/AList.thy
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     1 (*  Title: 	Substitutions/alist.thy
     1 (*  Title:      Substitutions/alist.thy
     2     Author: 	Martin Coen, Cambridge University Computer Laboratory
     2     Author:     Martin Coen, Cambridge University Computer Laboratory
     3     Copyright   1993  University of Cambridge
     3     Copyright   1993  University of Cambridge
     4 
     4 
     5 Association lists.
     5 Association lists.
     6 *)
     6 *)
     7 
     7