1.1 Glossary

This document uses the following terms:

device driver: The software that the system uses to communicate with a device such as a display, printer, mouse, or communications adapter. An abstraction layer that restricts access of applications to various hardware devices on a given computer system. It is often referred to simply as a "driver".

device interface: A uniform and extensible mechanism that interacts programmatically with applications and the system. A device driver can expose zero, one, or more than one device interfaces for a particular device. A device interface is represented by a GUID.

globally unique identifier (GUID): A term used interchangeably with universally unique identifier (UUID) in Microsoft protocol technical documents (TDs). Interchanging the usage of these terms does not imply or require a specific algorithm or mechanism to generate the value. Specifically, the use of this term does not imply or require that the algorithms described in [RFC4122] or [C706] must be used for generating the GUID. See also universally unique identifier (UUID).

handle: Any token that can be used to identify and access an object such as a device, file, or a window.

HRESULT: An integer value that indicates the result or status of an operation. A particular HRESULT can have different meanings depending on the protocol using it. See [MS-ERREF] section 2.1 and specific protocol documents for further details.

Input/Output (I/O) routines: A routine defined by an operating system that enables applications to interact with a device driver. Applications use these routines for tasks, such as opening a device, creating a file, reading data from a device, writing data to a device, or sending control codes to a device.

multisz string: A null-terminated Unicode string composed of other null-terminated strings appended together. For example, a multisz string that contains "one", "brown", and "cow" would be represented as three null-terminated strings "one\0", "brown\0", "cow\0" appended together with an additional null appended, as follows: "one\0brown\0cow\0\0".

remote device: A device that is attached to a remote (or client) machine, in contrast to a device physically attached to a machine.

terminal client: A client of a terminal server. A terminal client program that runs on the client machine.

terminal server: A computer on which terminal services is running.

Unicode string: A Unicode 8-bit string is an ordered sequence of 8-bit units, a Unicode 16-bit string is an ordered sequence of 16-bit code units, and a Unicode 32-bit string is an ordered sequence of 32-bit code units. In some cases, it could be acceptable not to terminate with a terminating null character. Unless otherwise specified, all Unicode strings follow the UTF-16LE encoding scheme with no Byte Order Mark (BOM).

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.