IBM 6400 Programmer's Reference Manual page 231

T
temporary baseline. The shifted baseline used for
subscript and superscript.
temporary baseline increment. A positive or
negative value that is added to the current baseline
presentation coordinate to specify the position of a
temporary baseline in a presentation space or on a
physical medium. Several increments might have
been used to place a temporary baseline at the
current baseline presentation coordinate.
text. A graphic representation of information. Text
can consist of alphanumeric characters and symbols
arranged in paragraphs, tables, columns, and other
shapes. An example of text is the data sent in an
IPDS Write Text command.
text command set. In the IPDS architecture, a
collection of commands used to present PTOCA text
data in a page, page segment, or overlay.
text orientation. A description of the appearance of
text as a combination of inline direction and baseline
direction. See also baseline direction, inline
direction, orientation, and presentation space
orientation.
text presentation. The transformation of document
graphic character content and its associated font
information into a visible form. An example of a
visible form of text is character shapes on a physical
medium.
text presentation space. A two-dimensional
conceptual space in which text is generated for
presentation on an output medium.
transform. A modification of one or more
characteristics of a picture. Examples of picture
characteristics that can be transformed are position,
orientation, and size. See also model transform,
segment transform, and viewing transform.
transparent data. A method used to indicate that any
control sequences occurring in a specified portion of
data can be ignored.
trimming. Eliminating those parts of a picture that
are outside of a clipping boundary such as a viewing
window or presentation space. See also viewing
window. Synonymous with clipping.
triplet. A three-part self-defining variable-length
parameter consisting of a length byte, an identifier
byte, and one or more parameter-value bytes.
truncation. Planned or unplanned end of a
presentation space or data presentation. This can
occur when the presentation space extends beyond
one or more boundaries of its containing presentation
space or when there is more data than can be
contained in the presentation space.
type. A table heading for architecture syntax. The
entries under this heading indicate the types of data
present in a construct. Examples include: BITS,
CHAR, CODE, SBIN, UBIN, UNDF.
type family. All characters of a single design,
regardless of attributes such as width, weight,
posture, and size. Examples are Courier and Gothic.
type style. The form of characters within the same
font, for example, Courier or Gothic.
U
underpaint. A mixing rule in which the intersection of
part of a new presentation space P
existing presentation space P
attribute of P . This is also referred to as
existing
"transparent" or "leave alone" mixing. See also
mixing rule. Contrast with overpaint.
underscore. A method used to create an underline
beneath the characters in a specified text field. An
example of underscore is the line presented under
one or more characters. Also a special graphic
character used to implement the underscoring
function.
unit base. A one-byte code that represents the
length of the measurement base. For example, X
might specify that the measurement base is ten
inches.
uppercase. Pertaining to capital letters. Examples of
capital letters are A, B, and C. Contrast with
lowercase.
user printable area (UPA). The portion of the
physical printable area to which user-generated data
is restricted. See also logical page, physical printable
area, and valid printable area.
V
valid printable area (VPA). The intersection of a
logical page with the area of the medium presentation
space in which printing is allowed. If the logical page
is a secure overlay, the area in which printing is
allowed is the physical printable area. If the logical
page is not a secure overlay and if a user printable
area is defined, the area in which printing is allowed
is the intersection of the physical printable area with
the user printable area. If a user printable area is not
defined, the area in which printing is allowed is the
physical printable area. See also logical page,
physical printable area, secure overlay, and user
printable area.
Glossary of Abbreviations and Definitions
Glossary
with part of an
new
keeps the color
existing
00
' '
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