The physical memory on a display device in which the pixel data is stored is commonly called a plane group.

The product name identifies the type of display card.

A request is a command to the server sent over a connection.

R, G, and B are the voltage levels to drive the red, green, and blue monitor guns, respectively.

A screen is a physical monitor and hardware, which is either color or black-and-white. A typical configuration could be a single keyboard and mouse shared among the screens.

A software colormap is a software abstraction of the color mapping process that a color LUT provides. The software colormap can be loaded, or installed, into a hardware color LUT. Also called a colormap.

A software colormap that is not visible until it is installed into a hardware color LUT.

A visual describes a way of interpreting a pixel value. The visual class and the pixel size attribute collectively describe a visual.

A visual category is a grouping of all visual classes of a given pixel size. The following visual categories are supported by OpenWindows: 1-bit, 4-bit, 8-bit, and 24-bit.

A visual class is how the pixel will be displayed as a color.

A window provides a drawing surface to clients for text and graphics. A single client application can use multiple windows.

A window ID (WID) table contains descriptors for visual aspects of a pixel, such as whether it is an 8-bit pixel or a 24-bit pixel, which LUT should be used when displaying the pixel, and whether the pixel is double-buffered.

Manipulation of windows on the screen and much of the user interface (policy) is typically provided by a window manager client. The window manager communicates only with the window server.

A window server, or display server such as the Solaris X server, is a program that handles the display capabilities of a machine and collects input from user devices and other clients, and sends events to clients. The server handles all communication with the window manager.