[Tagging] custom road ref shields

[Phil! Gold]

* Richard Welty <rwelty at averillpark.net> [2014-11-27 11:09 -0500]:
> actually, specifying the shield with a URL for an svg file was an older
> approach.

And, I should note, one that I consciously did not use.  I believe it was
Richard Weait who pointed out that grabbing an arbitrary image, chosen by
someone else, off of the Internet and using it in a rendering might not be
the greatest idea...