Tools > OpenGL <On/Off>

Enables OpenGL support.

OpenGL is an industry standard high-quality 3D graphics rendering interface. The main advantages in using OpenGL are hardware acceleration of the graphics display and support for z-buffering. Of course you must have a graphics adaptor that supports OpenGL and have the OpenGL display driver installed to get hardware acceleration.

See Tools > OpenGL Parameters to view OpenGL setup.

See Tools > OpenGL Anti-aliasing to smooth lines.