(* Title: HOL/List.thy ID: $Id$ Author: Tobias Nipkow Copyright 2000 TU MuenchenA basis for building theory List on. Is defined separately to serve as abasis for theory ToyList in the documentation.*)theory PreList = Option + Wellfounded_Relations + NatSimprocs + Recdef + Record + Relation_Power + Calculation + SVC_Oracle:(*belongs to theory HOL*)declare case_split [cases type: bool](*belongs to theory Wellfounded_Recursion*)declare wf_induct [induct set: wf]end