The Dink Network

I remember looking into this back when I added extra fields for all the hidden sprite properties in WDED. Indeed it seemed you could write to it but not read from it, either way, WDED should allow you to set a value for it, even though DinkHD wouldn't be able to really do much with it (other than what you already mentioned).
I guess now with DinkLua in YeOldeDink it will be actually useful to be able to edit the value