During MC running, sometimes you need to access MC parameters and plot them. To do this, you should copy them in the array REAL rUSER(50) (from ``getevkin.inc''). This should be done in the main loop of the FORTRAN program.
For example, for PYTHIA6, copy necessary variables to the rUSER array in ``main/mcarlo/pythia-62/RUNMC-pythia6.f'' after the line ``nev=nev+1''. Then you can access this variable in any of your function (like ``user_afill.cpp'' under ``proj'') if you specify the include file `` #include<getevkin.h>'' and put the line ``extern getevkincommon getevkin_ ;'', You variable should be seen as ``getevkin_.rUSER[0]'', ``getevkin_.rUSER[1]'' etc. Look at the example in ``dis_kinematics.rmc'' where the kinematic variables Q2 etc were taken directly from the LEPTO model.
Similarly, you can do the same with any MC model.