Envelope of stresses (Bending Moments, Axial Forces, Shear Forces) are created from load combination by finding of maximal values. Envelope can not be created for load cases.
After a non-linear analysis results will be shown only the 2nd order (the 1st order results are not shown with a dashed line).
The Envelope table is represented in the Envelope window:
Results are calculated and displayed in several tabs. The first column shows all members. The following columns show Axial Forces, Shear Forces and Bending Moments positive and negative values.