Thanks much for this additional capability, Josh...I've been using your earlier version to have some instructions on my forums, and this'll make it easier to handle (though I'm not going to implement it until I get back from this long trip I'm on, because I don't trust myelf to not screw something up, and I'd rather be at my main computer to handle any difficulties I cause).
By the way, as I remember, one has to be careful about quotation marks (e.g., in a link...), and I wonder whether the instructions note this little foible...
Finally, for some purposes, it would be handy to be able to have instructions on the "show" pages (flat and otherwise), which I guess would be analogous to what you've done for the postlist. Would this be hard to implement by analogy (e.g., for someone who doesn't know much about tables, etc.), and would it involve any other additional templates, besides showflat and show threaded?
Thanks again!

Tony