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Web Design References

Web Design Glossary: O


On-Screen Keyboard
A keyboard that appears on screen and accepts user input. A person who cannot use their hands may use an on-screen keyboard combined with a head pointer.
One-Way Mirror
A one-way mirror is a piece of glass that is a mirror on one side but can be seen through from the other side. One-way mirrors are sometimes used in usability testing or focus groups so that observers may watch the session without being distracting or disruptive.
In information technology, an ontology (pronounced ahn-TAH-luh-djee) is the working model of entities and interactions in some particular domain of knowledge or practices. It is a set of concepts that are specified in some way in order to create an agreed-upon vocabulary for exchanging information. A formal ontology is a controlled vocabulary expressed in an ontology representation language. This language has a grammar for using vocabulary terms to express something meaningful within the specified domain of interest.
In programming operators are used to combine and manipulate expressions. They tell the computer which actions to perform.