The Display menu > Show Moment Curvature Curve command is only available for concrete sections that have reinforcing specified. Clicking the Show Moment Curvature Curve command accesses the Moment Curvature Curve form.
The following links provide access to information about the various areas of the Interaction Surface form, including the table, charts, Edit boxes and Edit menu.
Moment Curvature Curve Form Table
Moment Curvature Curve Form Charts
Moment Curvature Curve Form Edit Boxes
Moment Curvature Curve Form Edit menu