[argyllcms] it3 format

I allready read the "Description of the .ti3 format" but I have still some 
questions regardig the data sets (the lines between BEGIN_DATA and END_DATA):

I am want to create only (s)RGB profiles.

1) which values are written in a dataset? is it the expected color value in RGB 
and the measured value in XYZ?
2) if there are more than two value pairs in a data set, are these severel 
measured values to be averaged by profile or are this different formats of the 
one measured value (like XYZ and L*a*b*)?
3) Is the order of the values in the dataset importent, do i need to switch 
RGB, XYZ values to XYZ, RGB according to the value of COLOR_REP?

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