I think that you can do everything that the checkbox plugin allowed you to do with the build-in checkbox widgets now.
Also none of the plugins from that site will work with the new tiddlywiki. A few years ago we switched to tiddlywiki 5 and for the most part it isn't backwards compatible with old plugins. -- 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/58214795-fdda-4766-aabf-cf7c554b4a0b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

