Some figures can move through difficult terrain some cant. How are the ones that can, affected by type 1 2 or 3 terrain. I see a minus modifier but no effect on either movement speed or maximum visible range.
4.1.1 Difficult Terrain - It could be a little clearer (I missed it as well) but the pertinent line is:
"In this game, Difficult Terrain is rated as Type 1, 2 or 3 - the number corresponds to the level of penalty associated with it."And the first paragraph tells you it affects movement and shooting. It also mentions visibility but I'm pretty sure that is in reference to the modifier rather than LOS. For example if playing with the Fog rule then a wood (type 2) would become type 3 for modifiers.
So to be precise, passing through a wood (type 2) would give -2 to hit when shooting and would knock two inches of movement off your maximum distance.
In section 10 it says in dark streets shooting ranges are reduced but I don't see that in the rules anywhere
City Streets by Night?
Turn to the page before and pick which level of darkness you want. i.e. Twilight or The Cloak of Night, both of which specify visibility distances.
I'm sure Craig will stop by and add his comments for an official answer
(and then I can hit him with my similar question that I can't answer)