Render Par's in Entertainment Posted January 21, 2003 Edit the 3D portion of the symbol. It should be a sweep. Is it swept 360 deg or 180 deg? Edit the 2d componect of the sweep. Is it a full half or quarter section of the Par? The render does best with a quarter section of the par swept 360 deg. It should work with a section sewpt 180 deg. It doesn't like it when the section is swept 360 deg. If you edit the symbol def, it should fix all of the instrumnets on your plot.