OK, I set Adobe PDF as my default. Same results. However, someone pointed me to a document that worked correctly. The ONLY difference I can see between that doc and mine is that the writer did NOT create a Frame character tag called Symbol that applied the Symbol font (Symbol, not Symbol Std).
Instead, he evidently went to the Format/Fonts menu and applied Symbol (not Symbol Std) directly from there. The characters I created that way survived the translation to PDF. (So did the characters I cut and pasted from the correct doc into mine. So evidently the Distiller font settings are not the issue.) Any thoughts as to why this made a difference? Thanks one and all -- what a nasty problem. --Nancy