In the tiddler you linked to the list field sets the order the entries appear in, it doesn't set which entries appear. So tagging something TableOfContents will put it in the table of contents at the first level, and trading something HelloThere will put it in the table of contents as a child of HelloThere.
I have a bit about them here http://inmysocks.tiddlyspot.com/#Creating%20a%20table%20of%20contents, if you have some compelling reason to use a parent field instead of a tag that is possible, but it would be less flexible. -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/85543489-7910-4e60-9245-17f973473abc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

