|Calculators are codes that take primary parameters of a model as inputs and calculate particles spectrum,
decay widths and dependent parameters in general. The output
is given in a Les Houches Accord II friendly
format which is then directly used by MadGraph to calculate the couplings in the Feynman diagrams.
In MadGraph this file is called param_card.dat and sits the Cards directory.
We strongly advise the users not to edit the param_card.dat file by hand but
to use the web interfaces or the codes that can be downloaded to create it.