Epson Stylus Color 200 User Manual page 126

saturation
The degree to which a color is undiluted by white light. The more
saturated the color, the more pure and bright it is.
self test
A method for checking the operation of the printer. When you run the self
test, the printer prints the characters stored in its memory.
unidirectional printing
Printing in which the print head prints in one direction only.
Unidirectional printing is useful for printing graphics because it allows
precise vertical alignment.
4
Glossary