True transparency is now supported for OpenGL platforms (previously only
screen-door transparency was supported).
Anti-aliasing of lines, and multiple-pixel-width lines is now supported
in OpenGL and GL. To specify anti-aliasing of lines, pass the object to
be rendered through the Options module, setting an attribute of
"antialias" with a value of "lines". To specify multiple pixel
width lines, pass the object to be rendered through Options, setting an
attribute of "line width", with value set to the number of pixels.
Hardware Rendering
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