IBM 6400 Programmer's Reference Manual page 214

Glossary
anamorphic scaling. Scaling an object differently in
the vertical and horizontal directions. See also
scaling, horizontal font size, and vertical font size.
ANSI. See American National Standards Institute.
append. In the MO:DCA architecture, an addition to
or continuation of the contents of a document
component. An example of an append is a string of
text that is an addition to an existing string of text on
a page.
application. (1) The use to which an information
system is put. (2) A collection of software
components used to perform specific types of work on
a computer.
application program. A program written for or by a
user that applies to the user's work.
arc. A continuous portion of the curved line of a
circle or ellipse. See also full arc.
arc parameters. Variables that specify the curvature
of an arc.
area. In GOCA, a set of closed figures that can be
filled with a pattern or a color.
array. In FD:OCA, the conceptual model used to
describe formatted data. An array describes a string
of data fields in terms of dimensions. See also
dimension.
article. The physical item that a bar code identifies.
A-space. The distance from the character reference
point to the least positive character coordinate
system X-axis value of the character shape. A-space
can be positive, zero, or negative. See also B-space
and C-space.
asynchronous exception. Any exception other than
those used to report a synchronous data-stream
defect (action code X ' 01 ' or X
resource-storage problem (action code X
Asynchronous exceptions occur after the received
page station. An example of an asynchronous
exception is a paper jam. See also data-stream
exception. Contrast with synchronous exception.
attribute. A property or characteristic of one or more
constructs. See also character attribute, color
attribute, current drawing attributes, default drawing
attributes, line attributes, marker attributes, and
pattern attributes.
198
6400 IPDS
' 1F ' ) or synchronous
' 0C ' ).
B
b . See current baseline print coordinate.
c
b . See initial baseline print coordinate.
i
B. See baseline direction.
+B. Positive baseline direction.
B . See current baseline presentation coordinate.
c
B . See baseline presentation origin.
o
background. (1) The part of a presentation space
that is not occupied with object data. (2) In GOCA,
that portion of a graphics primitive that is mixed into
the presentation space under the control of the
current values of the background mix and background
color attributes. Contrast with foreground. (3) In
GOCA, that portion of a character cell that does not
represent a character. (4) In bar codes, the spaces,
quiet zones, and area surrounding a printed bar code
symbol.
background color. The color of a background.
Contrast with foreground color.
background mix. (1) An attribute that determines
how the color of the background of a graphics
primitive is combined with the existing color of the
graphics presentation space. (2) An attribute that
determines how the points in overlapping
presentation space backgrounds are combined.
Contrast with foreground mix.
bar. In bar codes, the darker element of a printed
bar code symbol. See also element. Contrast with
space.
bar code. An array of parallel rectangular bars and
spaces that together represent data elements or
characters in a particular symbology. The bars and
spaces are arranged in a predetermined pattern
following unambiguous rules defined by the
symbology. See also bar code symbol.
bar code command set. In the IPDS architecture, a
collection of commands used to present bar code
symbols in a page, page segment, or overlay.
bar code density. The number of characters per inch
(cpi) in a bar code symbology. In most cases, the
range is three to ten cpi. See also character density,
density, and information density.
Bar Code Object Content Architecture (BCOCA). An
architected collection of constructs used to
interchange and present bar code data.
bar code presentation space. A two-dimensional
conceptual space in which bar code symbols are
generated.