[Radiance-dev] Re: [Radiance-general] how to filter objects by modifier?

[Gregory J. Ward]

Hi Ian,

Unfortunately, Radiance input files are designed to be read with 
scanf(), which doesn't differentiate between spaces, tabs, and 
newlines.  That means that the formatting of primitives in Radiance is 
almost entirely by convention.  The only exceptions to this are for 
inline commands and comments, which must appear on a single line.  (In 
the case of inline commands, the newline may be escaped with '\'.)

This is all spelled out pretty clearly in the basic reference manual:

	http://radsite.lbl.gov/radiance/refer/ray.html

You should probably consult it.
-Greg