Optimal TOC use for multiple topics?

I’ll have a look again.

Edit: There is a tf.toc-getTooltip function now, that you can easily overwrite, when you create a toc.

\function tf.toc-getTooltip() [<currentTiddler>get[toc-tooltip]!is[blank]] :else[<currentTiddler>]

Thanks, still it seems it would be a little more consistent to use the same approach as with your tooltipField (Function) which can also be modified.