Digital BW, The Print

I'm new to this group and think this one of the best on the web. 
I,ve been shooting zone for 30 yrs. I see a few post that say a 
print should have a range from pure black to pure white. NOT SO. I 
do mostly landscapes. The only time you would have a pure white is 
when you have the sun in the image or the specular highlights from 
some reflection like water ao say chrome. If I,m shooting a shot 
with thick fog I may not want a value over zone 8 or under 4. So it 
is not a Rule that you must have that range in every print. Artistic 
preferences aside. John Berry (roadkill)