Do not use quality by itself as an adjective. Always use high-quality. See also high-quality.
Microsoft style
Microsoft Word is a high-quality word processor.
Not Microsoft style
Microsoft Word is a quality product.
Do not use quit to refer to any of the following:
A user closing a document or a window. Use close instead.
The action a program takes to close itself when it has encountered a problem and cannot continue. Use close instead. (Do not confuse with stop responding, which indicates that the program cannot close itself.)
Ending a user session on a computer or on a network. Use log off instead.
Ending a network connection. Use end instead.
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