woops, looks like I was a bit premature. It turns out (and it makes sense) that you can't use this via transclusion. That is, the tiddler through which you're viewing the original question (which has the checkbox to multiple tags) is the one getting tagged, not the original one.
Now that I've bumped up against this, I see that's what you were talking about in your last post (it seems I have to learn the hard way :-) Eric, how about this? <<tiddler DailyChecklist##toggleall with: "[[tiddler to be tagged]] [[tag1]] [[tag2]]">> -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.

