Aliasing is the staircase effect that occurs when square or rectangular pixels are used to draw diagonal or curved edges on raster displays.
Antialiasing improves image quality by sampling adjacent pixels to smooth those edges. There are four antialiasing settings from which you can choose. Higher settings can cause edges to look blurry, and can also affect program performance.
NoteAntialiasing remains in effect across sessions.
Click View tab Appearance panel. For Antialiasing, select 2X, 4X, 8X, or off.