IBM 3270 G Manual page 131

drawing controls. In the Graphics Control
Program, the controls (such as arc parameters,
transforms, and viewing window) that determine
how a picture is drawn.
drawing order. An instruction that the Graphics
Control Program follows during a drawing process.
The order can, for example, (1) specify a graphics
primitive to be drawn, (2) change the attributes or
drawing controls to be used, or (3) call a segment.
dual-screen work station. A work station having
an IBM 5379 Display and an IBM 5151 Monochrome
Display Model 2. During a graphics application
that has been customized to be dual-screen, the 5379
shows pictorial information and the 5151 shows the
text and commands needed with the picture.
Enlarge. A function that allows you to enlarge the
dimensions of a window to its maximum size and,
sometimes, to enlarge the size of characters.
expansion unit. An optional element (the IBM
5161 Expansion Unit Model l) in a work station
that serves as an extension to the system unit. The
expansion unit contains a fixed-disk drive and
accommodates adapters for options when no further
adapters are available in the system unit.
file. A collection of data. This data can be
programs, text, statistics, pictures, or charts. Files
are stored in the host computer, on personal
computer diskettes, or on the personal computer
fixed disk. (Also known as data set.)
File Transfer. The work station function that
'l
llowR you to RPnrl >1nd receivP fileR between the
work station and the host computer, when you have
a host-supported file transfer program.
file transfer program. A host computer program
that allows the use of the File Transfer function on
the work station.
fillet. A curved line drawn tangential to a
specified set of straight lines.
fixed disk. A nonremovable storage that may be
provided in a work station. The disk is made of
rigid material with a magnetic coating. If present,
the disk is housed in a drive in the system unit (or
expansion unit) and is used for the mass storing of
data.
foil. A transparency for overhead projection.
*
font. A family or assortment of characters of a
given size and style, for example, 9 point Bodoni
Modern.
foreground color. (l) The color of characters or
lines within a window. (2) In computer graphics,
the color used to draw the on points of a graphics
primitive in normal display or the off points of a
graphics primitive in reverse-video display.
formatting. Preparing a diskette or fixed disk so
that it can be used by the Disk Operating System
and can accept DOS files.
four-button cursor. A hand-held device, with
cross-hair sight, for indicating positions on the
surface of a tablet.
full arc. A complete circle or ellipse.
GCP. Graphics Control Program.
GDDM. Graphical Data Display Manager.
GPI. Graphics procedure interface.
*
graphic. (ISO) A symbol produced by a process
such as handwriting, drawing, or printing.
Graphical Data Display Manager (GDDM). An
IBM program product, running in a host computer,
that manages display devices, printers, and plotters
for graphics applications.
graphics cursor. (1) The movable marker on the
display screen that shows, for example, where the
next graphics action (such as drawing or moving a
line) will occur. The cursor can have various
shapes. (2) The movable marker on the display
screen whose position and presence are controlled
by the application program.
graphics layer. Graphics information that may be
displayed alone or under a layer of alphanumeric
information.
graphics presentation space. In the Graphics
Control Program, the two-dimensional conceptual
space in which a picture is generated, after any
viewing transforms, for display.
graphics primitive. A basic element, such as a
line, an arc, or a character string, that an output
device uses in drawing a picture. (Also known as
output primitive.)
graphics procedure interface (GPI). (1) The
interface that provides communication between an
application program and the Graphics Control
Program. (2) The set of commands by which an
application program communicates with the
Graphics Control Program.
graphics segment. See segment.
Glossary
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