IBM 6400 Programmer's Reference Manual page 221

font width (FW). (1) A characteristic value, parallel
to the character baseline, that represents the size of
all graphic characters in a font. Synonymous with
horizontal font size. (2) In a font character set,
nominal font width is a font-designer defined value
corresponding to the nominal character increment for
a font character set. The value is generally the width
of the space character and is defined differently for
fonts with different spacing characteristics.
For fixed-pitch, uniform character increment fonts:
•
the fixed character increment, which is also the
space character increment
For PSM fonts: the width of the space character
•
For typographic, proportionally spaced fonts:
•
one-third of the vertical font size, which is also
the default size of the space character.
The font designer can also define a minimum and a
maximum horizontal font size to represent the limits
of scaling. (3) In font referencing, the specified font
width is the desired size of the font when the
characters are presented. If this size is different from
the nominal horizontal font size specified in a font
character set, the character shapes and character
metrics might need to be scaled prior to presentation.
foreground. (1) The part of a presentation space that
is occupied by object data. (2) In GOCA, the portion
of a drawing primitive that is mixed into the
presentation space under the control of the current
value of the mix and color attributes. See also pel.
Contrast with background.
foreground color. A color attribute used to specify
the color of the foreground of a primitive. Contrast
with background color.
foreground mix. An attribute used to determine how
the foreground color of data is combined with the
existing color of a graphics presentation space. An
example of data is a graphics primitive. Contrast with
background mix.
form. A division of the physical medium; multiple
forms can exist on a physical medium. For example,
a roll of paper might be divided by a printer into
rectangular pieces of paper, each representing a
form. Envelopes are an example of a physical
medium that comprises only one form. The IPDS
architecture defines four types of forms: cut-sheets,
continuous forms, envelopes, and computer output on
microfilm. Each type of form has a top edge. A form
has two sides, a front side and a back side.
Synonymous with sheet.
format. The arrangement or layout of data on a
physical medium or in a presentation space.
full arc. A complete circle or ellipse. See also arc.
fully described font. In the IPDS architecture, an
LF1-type raster-font resource containing font metrics,
descriptive information, and the raster representation
of character shapes, for a specific graphic character
set. A fully described font can be downloaded to a
printer using the Load Font Control and Load Font
commands. An LF1-type coded font or coded-font
section is the combination of one fully described font
and one font index. See also font index.
G
GCSGID. See Graphic Character Set Global Identifier.
given position. The coordinate position at which
drawing is to begin. A given position is specified in a
drawing order. Contrast with current position.
Global Identifier (GID). Any of the following:
Code Page Global ID (CPGID)
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Graphic Character Global Identifier (GCGID)
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Font Typeface Global Identifier (FGID)
•
Graphic Character Set Global Identifier (GCSGID)
•
Coded Graphic Character Set Global Identifier
•
(CGCSGID)
In the MO:DCA architecture, an encoded graphic
•
character string that provides a reference name
for a document element.
Global Resource Identifier (GRID)
•
Object identifier (OID)
•
Coded Character Set Identifier (CCSID).
•
global resource identifier (GRID). An eight-byte
identifier that identifies a coded font resource. A
GRID contains the following fields in the order shown:
1. GCSGID of a minimum set of graphic characters
required for presentation. It can be a character
set that is associated with the code page, or with
the font character set, or with both.
2. CPGID of the associated code page
3. FGID of the associated font character set
4. Font width in 1440ths of an inch.
glyph. A member of a set of symbols that represent
data. Glyphs can be letters, digits, punctuation
marks, or other symbols. Synonymous with graphic
character. See also character.
GOCA. See Graphics Object Content Architecture.
graphic character. A member of a set of symbols
that represent data. Graphic characters can be
letters, digits, punctuation marks, or other symbols.
Synonymous with glyph. See also character.
Graphic Character Set Global Identifier (GCSGID). A
unique graphic character set identifier that can be
Glossary of Abbreviations and Definitions
Glossary
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