A helper macro is probably the way to go if you want to use a checkbox. here is a minimal example:
\define dateString() worklog <<now "YYYY/0MM/0DD">> <$wikify name=date text=<<dateString>>> <$checkbox tag=<<date>>/> </$wikify> -- 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/e0815bb4-22c6-4eb4-a3fd-5c7cc4bd2f12%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

