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Beam cross section shear and torsion stresses

I found the ABCS method described for example in the MSC Nastran 2022.1
Linear Static Analysis User’s Guide Ch. 4 page 137 onw.
It seems that a FEM for each section is generated (GRID and CTRIA6),
Nastran run with .f06 and .op2 up to Von Mises section plots with Patran.
Is there any link to Patran pre and post processing menu?
Anybody has a quick guide - exercise step by step?