For 1 you put your html in a tiddler and tag the tiddler with $:/tags/RawMarkup that adds the contents to the <header> html tag and it will always be available.
I don't know about 2. -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/5fda7bcb-da62-4655-9492-28160c35972b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
