element recorder

[mch_basim]

Hi
I have a very simple 2D elastic steel frame. I modeled it with "dispBeamColumn" elements with elastic sections to record forces (moments) in various sections along beams. I wonder why the moment data for i node of the element recorded by:
recorder Element -file $dataDir/Fbeam212.txt -time -ele 212 localForce;
differs from the one recorded by:
recorder Element -file $dataDir/Fbeam212.txt -time -ele 212 section 1 force;

what is recorded in section force recorder, the manual says it records Fx and Mx, I don't know what is Mx when x is along the element in local coordinate!

thanks in advance.

[fmk]

the section recorder records the moment and axial force for the section. the section in a disp beam column is NOT at the end of the beam (it uses gauss-legendre integration) .. even if it was the forces may not be the same due to numerical integration