Thanks Tan! I was reading something similar from the Apple website, and having the same problem you mentioned about InternalLeading (they call it units_per_em)
I will read your link, Thanks again!
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges
