One of the parameters for Polyobj_ExplicitLine
is "Rendering order":
Polyobj_ExplicitLine (po, order, mirror, sound, lineid)
order: rendering order of this line
I realise that the obvious answer here is "it sets the rendering order of this line, like the Wiki says" but, what does that actually mean?
Why do Polyobj_ExplicitLines need this parameter (the console prints a warning if it is left at 0)?
What actual impact does it have on the appearance of the polyobject in game?
If I have several polyobjects near each other, are there any "rules" for how this argument should be set?