is_open: surrogate sequence is High..Low;
added class Index for decoding offsets;
tuned;
header {* Plain HOL *}
theory Plain
imports Datatype FunDef Record Extraction Divides
begin
text {*
Plain bootstrap of fundamental HOL tools and packages; does not
include @{text Hilbert_Choice}.
*}
ML {* path_add "~~/src/HOL/Library" *}
end