ParametricPlot3D::glims
ContourPlot::glims
DensityPlot::glims
Plot3D::glims
This generates a message because the same symbol is used for both iteration variables:
Plot3D[Sin[x y], {x, 0, 3}, {x, 0, 3}]This shows a correct use of Plot3D:
Plot3D[Sin[x y], {x, 0, 3}, {y, 0, 3}]