shared cast 1504 : "sprite handlers" -- setPurge added.

chapter1:  1 -- startchapter1 -- added some code at the end

chapter1: 1 -- stopChapter1  -- new handler

chapter1: 1 -- playTV  -- modified

chapter1: 1 -- videoButton  -- modified

chapter 1: 1-- initTest -- modified

chapter 1: 1 -- startFocus -- modified the bitdepth change on mac, added optionDown option, added currentBookmark