code page. (1) A particular assignment of hexadecimal identifiers to graphic characters. (2) In AFP support, a font file that associates code points and graphic character identifiers. code-page ID. A 5-digit registered identifier used to specify a particular assignment of code points to graphic characters. The code-page ID is the second part of the QCHRID system value or the CHRID parameter value. See also graphic character-set ID . code point. (1) One of the bit patterns assigned to a character in a character set. On the system, a code point is represented by a hexadecimal number. For example, in code page 256 (EBCDIC), the letter † e † is assigned a code point of hex 85. (2) In AFP support, an 8-bit binary number representing one of 256 potential characters. coded font. In AFP support, a font file that associates a code page and a font character set. For double-byte fonts, a coded font associates multiple pairs of code pages and font character sets. command. (1) A statement used to request a function of the system. A command consists of the command name abbreviation, which identifies the requested function, and its parameters. starts a protocol. command line. The blank line on a display where commands, option numbers, or selections can be entered. command prompt. A displayed character (or string of characters) that indicates that a user may enter a command to be processed. compatibility. Ability to work in the system or ability to work with other devices or programs. completion message. A message that tells the operator when work is successfully ended. concatenate. To join two character strings. concept. An abstract idea. contextual help. Help that explains the field on which the cursor is positioned when you press the Help key. Contrast with extended help . control field. In AFP Utilities, an input field on the screen view that is used to move the image are up, down, left, or right. control language (CL). The set of all commands with which a user requests system functions. control language (CL) program. A program that is created from source statements consisting entirely of control language commands. cpi. See characters per inch (cpi) . DBCS conversion. A function of the operating system that allows a DBCS display station user to enter alphanumeric data and request that the alphanumeric data be converted to double-byte data. DBCS. See double-byte character set (DBCS) . database file. One of several types of the system object type *FILE kept in the system that contains descriptions of how input data is to be presented to a program from internal storage and how output data is to be presented to internal storage from a program. See also physical file and logical file . database. All the data files stored in the system. data tower. In AFP Utilities, a set of intelligent printer data stream commands that represent a data type, such as text, image, graphics, and bar code. data stream. All information (data and control commands) sent over a data link usually in a single read or write operation. data management. The part of the operating system that controls the storing and accessing of data to or from an application program. The data can be on internal storage (for example, database), on external media (diskette, tape, or printer), or on another system. data integrity. (1) The condition that exists as long as accidental or intentional destruction, alteration, or loss of data does not occur. (2) Within the scope of a unit of work, either all changes to the database management systems are completed or none of them are. The set of change operations are considered an integral set. data area. A system object used to communicate data, such as CL variable values between the programs within a job and between jobs. The system-recognized identifier for the data area is *DTAARA. cursor. A movable symbol, often a blinking or solid block of light, that tells the display station user where to type, or identifies a choice to select. current release. The latest available release of the system that replaced the licensed internal code and/or the operating system. current library. The library that is specified to be the first user library searched for objects requested by a user. The name for the current library can be specified on the Sign-On display or in a user profile. When you specify an object name (such as the name of a file or program) on a command, but do not specify a library name, the system searches the libraries in the system part of the library list, then searches the current library before searching the user part of the library list. The current library is also the library that the system uses when you create a new object, if you do not specify a library name. 468 AFP Utilities for iSeries: User’s Guide