Adkins and Hodges, 2019, in their "assessment of the precision, bias and numerical correlation of fitted parameters" obtained by means of the Hartmann-Tran profile, tell that IUPACrecommended HTP "has emerged as a widely utilized spectroscopic model profile for high resolution spectroscopy with the caveat that its use requires high signal-to-noise ratio data, adequate constraints, and a wide pressure range". Adkins and Hodges also tell: "Many laboratories … use custom software for conducting multi-spectrum HTP fits with known and unknown differences in how the line shape and other parameters are defined. Differences between models used in the fitting and parameterization for spectroscopic databases can lead to incompatibility in line parameters and down-stream algorithms such that they cannot be used to reproduce fits to experimental data". Let us add that, if we need functions which are numerically calculated, we have also to know the numerical methods used to define them, that is, the used subroutines, and the compiler involved in calculations too.