The output "Fs" contains vectors of cross section forces Nx, Vy, and Vz - again in the order of output elements in "Elems". The moment vectors "Ms" - they contain Mx, My and Mz - refer to the position directly at the node. They get transformed to the element's reference line so beam eccentricities do not affect them. In this way they add up to zero (see fig. 22.214.171.124) in the absence of external nodal moment-loads.