There are two reasons this can happen. First, and the reason it happens in the examples you linked to, is that in most (possibly all) of the built in table of contents macros have layers in the hierarchy alternating between bold and normal text. So in that example all of the items in the root layer (first, second, third, fourth) are bold because they are in the first layer. Then firstone, firsttwo and so on are not bold because they are directly below a bolded layer, and then finally secondthreeone, secondthreetwo and so on are bold because they are below a non-bolded layer.
It is just there to help visually distinguish between the layers in the table of contents hierarchy. Second, if you have plugins that add tiddlers to your table of contents those tiddlers will be bold by default because that is how shadow tiddler names are displayed. If one of those tiddlers gets changed than the name will no longer be bold. This can lead to tiddlers in the table of contents not following the above pattern. It is also why I have started moving any configuration or changes to tiddlers out of the visible tiddlers in my 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 http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/d/optout.

