explicit session HOL-Proofs -- avoid statefulness of main HOL image wrt. HOL_proofs etc.;
header {* Plain HOL *}
theory Plain
imports Datatype Record FunDef Extraction
begin
text {*
Plain bootstrap of fundamental HOL tools and packages; does not
include @{text Hilbert_Choice}.
*}
ML {* path_add "~~/src/HOL/Library" *}
end