## Pen for OS/2 Device Driver Reference

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### Glossary - S

S

screen - The physical surface of a display device upon which information is shown to a user.

settings - Characteristics of objects that the user can view and sometimes alter.

shift - An action during mouse-emulation mode in which the default mouse button 1 down action emulates another button or combination of buttons for the duration of the stroke.

shutdown - The procedure required before the computer is switched off to ensure that data is not lost.

SOM - System Object Model.

source directory - The directory from which information is read. Contrast with target directory.

stroke - The collection of points between the point where the pen touches a touch-sensitive surface and the point where the pen is removed from the surface.

subclass - A class that is derived from another class. The subclass inherits the data and methods from the parent class and can define new methods or override existing methods to define new behavior not inherited from the parent class. See inheritance.

System Object Model - A mechanism for language-neutral, object-oriented programming for the OS/2 environment.