Full Scene Antialiasing
By default, the Full Scene Antialiasing preference is disabled. This option lets you see smooth lines as you draw as swell as an antialiased drawing area. You can change the value of the Full Scene Antialiasing using the Preferences dialog box, to fit the current level used in the Camera or Drawing view.
Support Transparency in Pencil Lines
When the option is enabled, the pencil lines are displayed normally. The lines will be opaque (unless there are transparencies). Disabling this option will reduce rendering times, but will display additive opacities for overlapping pencil lines and unevenly filled curved pencil lines.