FACING for Prone figures

[Skarg]

Hcobb has mentioned (in his own way) several times over the past months that (to paraphrase in a way that makes more sense to me) the rules don't explain facing for prone figures, which is important because prone figures can cast spells and use ranged attacks.

(I didn't bother to answer this before, because I thought he was just making silly side-comments about the letter of the rules, which seemed to me not worth the effort to address, but it recently threadjacked the other "Prone figures" question thread and seems to be causing confusion, so I started this new thread.)

Seems to me it's extremely easy to handle: Have prone figures declare a facing, which determines which way they are looking, and gives them a 180-degree field of view for spells, ranged attacks, and other acts of observation etc.

Hcobb's point that the rules say prone figures have no front hexes is irrelevant, it seems to me, because front hexes do not apply to most spells or ranged attacks anyway - the 180-degree field of view has always determined that, so there is no real issue to make confusing remarks about.