IBM 6400 Programmer's Reference Manual page 227

page segment. (1) In the IPDS architecture, a
resource object that can contain text, image, graphics,
and bar code data. Page segments do not define
their own environment, but are processed in the
existing environment. (2) The final representation of
such an object on a physical medium. Contrast with
overlay.
page-segment command set. In the IPDS
architecture, a collection of commands used to load,
deactivate, and include page segments.
page-segment state. An operating state that makes
page-segment data available to a product. For
example, a printer enters page-segment state from
home state when it receives an IPDS Begin Page
Segment command.
page state. In the IPDS architecture, an operating
state that makes page data available to a product.
For example, a printer enters page state from home
state when it receives an IPDS Begin Page command.
parameter. (1) A variable that is given a constant
value for a specified application. (2) A variable used
in conjunction with a command to affect its result.
partition. (1) Dividing the medium presentation
space into a specified number of equal-sized areas in
a manner determined by the current physical media.
(2) In FD:OCA, a conceptual subdivision of a string of
data fields. A partition can be further divided into
subpartitions. See also dimension.
partitioning. (1) A method used to place parts of a
control into two or more segments or structured
fields. Partitioning can cause difficulties for a
receiver if one of the segments or structured fields is
not received or is received out of order. (2) In
FD:OCA, a conceptual division of a string of data
fields into substrings. Each substring is called a
partition. See also partition.
pattern. An array of symbols used to fill an area.
pattern attributes. The characteristics that specify
the appearance of a pattern.
pattern set. An attribute in GOCA used to access a
symbol set or coded font.
pattern symbol. The geometric construct that is used
repetitively to generate a pattern. Examples of
pattern symbols are dots, squares, and triangles.
pel. The smallest printable or displayable unit on a
physical medium. In computer graphics, the smallest
element of a physical medium that can be
independently assigned color and intensity. Pels per
inch is often used as a measurement of presentation
granularity. Synonymous with picture element and
pixel.
physical medium. A physical entity on which
information is presented. Examples of a physical
medium are a sheet of paper, a roll of paper, an
envelope, and a display screen. See also medium
presentation space and sheet.
physical printable area. A bounded area defined on a
side of a sheet within which printing can take place.
The physical printable area is an attribute of sheet
size and printer capabilities, and cannot be altered by
the host. The physical printable area is mapped to
the medium presentation space, and is used in user
printable area and valid printable area calculations.
Contrast with user printable area and valid printable
area.
pick window. A region of a graphics presentation
space that is used for correlation. A pick window has
specified characteristics. Examples of pick window
characteristics are position in a graphics presentation
space and size. See also correlation.
picture element. The smallest printable or
displayable unit on a physical medium. In computer
graphics, the smallest element of a physical medium
that can be independently assigned color and
intensity. Picture elements per inch is often used as a
measurement of presentation granularity.
Synonymous with pel and pixel.
pixel. The smallest printable or displayable unit on a
physical medium. In computer graphics, the smallest
element of a physical medium that can be
independently assigned color and intensity. Picture
elements per inch is often used as a measurement of
presentation granularity. Synonymous with pel and
picture element.
point. (1) A unit of measure used mainly for
measuring typographical material. There are
seventy-two points to an inch. (2) In GOCA, a
parameter that specifies the position within the
drawing order coordinate space. See also drawing
order coordinate space.
portrait. A presentation orientation in which the X
axis is parallel to the short sides of a rectangular
physical medium. Contrast with landscape.
position. A position in a presentation space or on a
physical medium that can be identified by a
coordinate from the coordinate system of the
presentation space or physical medium. See also
picture element. Synonymous with addressable
position.
Positive Acknowledge Reply (ACK). In the IPDS
architecture, a reply to an IPDS command that has its
ARQ flag on and in which no exception is reported.
Contrast with Negative Acknowledge Reply.
pragmatics. Information related to the usage of a
construct. See also semantics and syntax.
Glossary of Abbreviations and Definitions
Glossary
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