# CRT – files of scattered flux

Scattered flux can be included in calculated spectra. However, it is usually better to calculate that separately either as a function of the angle from the direction of the observer or as a 2-dimensional map towards selected direction. The keyword outcoming must always be used when scattered intensity is computed. The scattered intensity is automatically saved to a text file `outcoming.dat`. If scattered intensity is computed for a 2D grid (see also keyword direction) the file contains lines `x-offset, y-offset, I(freq1), I(freq2) ...`. If intensity is calculated only as a function of angle theta from the direction of the observer the lines will be `cos(theta), I`.