Symbols and Numerics

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1980 X.25 call

A call that conforms to the 1980 X.25 protocol specifications.

1984 X.25 call

A call that conforms to the 1984 X.25 protocol specifications.

1988 X.25 call

A call that conforms to the 1988 X.25 protocol specifications.

3270 attention field

A field on a display screen that contains a null, a space, or an ampersand in the first position. The field can be selected using the Cursor Select key, which causes data to be sent to the host system.

3270 device emulation

The IBM® i support that allows a system to appear as a 3274 Control Unit in a BSC multipoint network or an SNA network.

3270 display emulation

The function of IBM i 3270 device emulation support that converts 3270 data streams intended for a 3278 display station into data streams that can be recognized by a display station attached to the system.

3270 printer emulation

The function of IBM i 3270 device emulation support that converts 3270, DSC, and SCS data streams intended for a 328X printer into data streams that can be recognized by a printer attached to the system.

3GL

See third-generation language.

3-state check box

A square box with associated text that represents a choice. Unlike a regular check box, which has only two states (selected and deselected), a 3-state check box has three states (selected, deselected, and unavailable). The unavailable state is displayed as a halftone and denotes that the 3-state check box cannot be selected.

5250 display

Any display device that uses the 5250 data stream. See also Programming Development Manager.

5250 emulation

Any one of many licensed programs that allow a personal computer to perform like a 5250 display station or printer and to use the functions of an IBM i operating system.

5290 display

Any display station from the 5290 Display System.