Yes, that is specific to the bookmarks I am using. It only displays tags that are listed in the $:/data/Bookmarks/BookmarkTags tiddler, and then under each tag it only displays things that have both that tag and the tag Bookmark, the second and third tag selection dropdowns only show up when the first (and then second for the third one) menu has an option selected. That implementation is almost certainly much more complex than what you are describing.
this: <$list filter='[!is[system]tags[]]'> <$transclude tiddler="$:/core/ui/TagTemplate" mode="inline"/> <$set name=CurrentTag value=<<currentTiddler>>> <$list filter='[tag<CurrentTag>]'> <$link to=<<currentTiddler>>><$view field='title'/></$link> </$list> </$set> </$list> may do what you want, just change the !is[system] part to whatever filter you want. So to only show tags that come from tiddlers that are tagged Contents you make the first line <$list filter='[tag[Contents]tags[]]'> -- 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 http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/d/optout.

