Terrain Effects on Melee & Morale

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Sorry if this has been dealt with but I can't find an answer in the game manuals or a trawl/search of the discussion boards.

Melee
I wondered what effect, if any, terrain had on melee? I note there are terrain affects movement and lessens the affect of fire, are there similar adjustments for melee? If so, where can I find them? Am I correct in thinking that 'Edged' is a units ability for melee?


Morale
Ditto for morale. Does defensive terrain modify a unit's morale?

Thanks,

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