Returns a formatted string (similar to the C function
sprintf()). Any occurance of the character % followed by a
letter is replaced by a value. In this implementation it doesn't
matter what letter you are actually using (in the Shading Language it
would be %f for floats, %p for points, vectors or normals, %c for
colors, %m for matrices and %s for strings).
match(
pattern, subject)
String pattern matching.
printf(
pattern, val1, val2, ..., valn)
Prints the values of the specified variables. Any occurance of the
character % followed by a letter is replaced by a value. In this
implementation it doesn't matter what letter you are actually using (in
the Shading Language it would be %f for floats, %p for points, vectors
or normals, %c for colors, %m for matrices and %s for strings).
