[jcranmer]

> In that declaration is where some comments would be.

Admittedly, I haven't read a lot of Fortran code, but I have yet to see anybody who includes such comments. It wouldn't be so bad except also:

a) the only code I see in Fortran is numerics code, therefore written by mathematicians or other people who seem to believe that using more than one letter to describe a term is an admission of weakness

b) people write function names as if it costs $1000 per extra character

c) there often doesn't seem to be any introductory resources to the concepts that are being implemented that might let me discover what cryptic one-letter variable names might actually refer to