Serif and San serif AND Antialiasing

Serif and San serif  

A serif is a small line attached to the end of a stroke in a letter or symbol. A typeface with serifs is called a serif typeface (or serifed typeface). A typeface without serifs is called sans serif or sans-serif.

Antialiasing

Antialiasing is a software technique for diminishing jaggies - stairstep-like lines that should be smooth.

Jaggies occur because the output device, the monitor or printer, doesn't have a high enough resolution to represent a smooth line.

Antialiasing strategies

The image can be calculated by considering the intensities over a particular region. This is called prefiltering.

 Prefiltering

Prefiltering methods treat a pixel as an area, and compute pixel color based on the overlap of the scene's objects with a pixel's area.