Tests changes to the graphics and parameters of your symbol to verify what effect these changes have on the symbol's representations. When the 2D symbol is placed in the 3D applications, the application is given a set of parameters, a scale and rotation angle, which can be different from the original parameters design in symbol 2D. This combination of factors can break the relationships that hold the symbol representation's geometry together. The representation test command allows a check of the symbol's representation under different sets of values. Representations can change when one or more parameters are modified or when graphic inputs are changed.