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overlay. A plastic guide that fits around a section
of your keyboard and identifies keys that are valid
during a specified application.
panel. The total set of information devoted to one
purpose and designed to appear on the screen (or
part of the screen) at one time, for example, a help
panel or a menu panel.
parallel printer adapter interface. The adapter
on the system unit to which a printer can be
connected.
pattern. A symbol used repeatedly to fill an area.
PEL; pel. Picture element; same as PIXEL.
personal computer session. The period during
which your work station is working as an IBM
Personal Computer.
pick.
(1) A
match between the pick window and a
graphics primitive during correlation. (2) The work
station user's action that selects a part of a picture.
(3) A
logical input device (or mode of operation)
that enables a user to identify and select a picture
segment with a hardware input device such as a
tablet, mouse, or keyboard.
picture element (PEL, PIXEL). (TC97) In
computer graphics, the smallest element of a display
space that can be independently assigned color and
intensity.
picture interchange format file. A file whose
content can be interpreted by both the work station
and the Graphical Data Display Manager.
pie chart. A chart in the form of a circle divided
into sectors, the angles of which represent
proportionally the values to the whole.
presentation space. The area containing the data
that goes on your display screen during each
session.
program function (PF) key. A key that passes a
signal to a program calling for a particular
operation. The PF keys are located in the topmost
area of your keyboard. The IBM Personal
Computer function keys are part of the PF keys.
Many of the work station control mode functions
are located here; their names are printed on an
overlay that fits around the keys.
resolution. (TC97) In computer graphics, a
measure of the sharpness of an image, expressed as
the number of lines per unit of length or the number
of points per unit of area discernable in that image.
rotating.
(1)
(TC97) In computer graphics, turning
all or part of a display image about an axis
perpendicular to the display surface.
(2)
In
three-dimensional graphics, revolving all or part of
a picture about any required axis.
scaling. (TC97) In computer graphics, enlarging
all or part of a display image by multiplying the
coordinates of the image by a constant value.
screen background color. The color of the parts
of the user area on the display screen that are not
covered by windows.
scrolling. (TC97) ln computer graphics, moving,
vertically or horizontally, a display image in a
manner such that new data appears at one edge as
old data disappears at the opposite edge.
SDLC. Synchronous Data Link Control.
segment. A part of Graphics Control Program
storage that contains drawing orders.
session. A working "connection" between your
work station and a host computer, a notepad, or a
personal computer. (See host session, notepad
session, and personal computer session.)
SetUp. The work station function from which you
can proceed to rearrange the screen. For example,
you can change the size, position, and color of your
windows.
SNA. Systems network architecture.
sufLware.
(TC97)
Prugramis, f.JrUcedureis,
rules, and
any associated documentation pertaining to the
operation of a computer system.
spool file. A collection of data written from the
screen to a diskette or fixed disk for printing by the
personal computer printer.
storage. A device, or part of a device, that can
retain data.
stylus. (1) (TC97) In computer graphics, a pointer
that is operated by placing it in a display space or a
tablet; for example, a light pen, a sonic pen, a
voltage pen. (2) A pen-like pointer for indicating
positions on the surface of a tablet.
*
symbol. A representation of something by reason
of relationship, association, or convention.
symbol set. A defined collection of symbols.
Glossary
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