Normalising User-Defined Histogram Weights

Hi! I’m using the general particle source macro file to generate my source output. I am inputting data in the format upper energy bin edge and corresponding number of particles in that bin (with the exception of the first entry which is the lower edge as informed by the user guide) as outputted in a histogram from another simulation.

Do the weights have to be normalised to any particular range? Or is particles per bin as outputted from the preceding simulation fine? I couldn’t find info on this in the guide!

Thank you!