Questions about new options for scene import in 7.4 versions

[laurahin]

Hi,

There are some new options when you import an external shading scene, such as from PVcase, and I can't find explicit documentation of them. 

1) What does "best azimuth" mean in the "PV objects - Define orientation according to" setting, and how is it determined?

2) What does the "Terrain" option do?  How would the tree crown "describe (maybe should be "define") the ground"?

Incidentally, the plural of foot is feet.  Feets is not a word in English.