- placeholder
-
From User Agent
Accessibility Guidelines 1.0 (2002-12-17) |
Glossary for this
source
A placeholder is content generated by the
user agent to replace author-supplied content. A placeholder may be
generated as the result of a user preference (e.g., to not render
images) or as repair content (e.g., when an image cannot be found).
Placeholders can be any type of content, including text, images,
and audio cues.
- plug-in
-
From User Agent
Accessibility Guidelines 1.0 (2002-12-17) |
Glossary for this
source
A plug-in is a program that runs as part of
the user agent and that is not part of content. Users generally
choose to include or exclude plug-ins from their user agent.
-
PNG (Portable network graphics)
-
From Glossary of "Weaving the Web"
(1999-07-23)
| Glossary for
this source
A format for encoding a picture pixel by
pixel and sending it over the Net. A recommendation of the W3C,
replacing GIF.
- PNG
datastream
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
- PNG
decoder
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
- PNG
editor
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
process or device which creates a
modification of an existing
PNG datastream ,
preserving unmodified ancillary information wherever possible, and
obeying the
chunk ordering rules,
even for unknown chunk types.
- PNG
encoder
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
- PNG
file
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
-
PNG four-byte signed integer
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
a four-byte signed integer limited to the
range -(2 31 -1) to 2 31 -1. The restriction
is imposed in order to accommodate languages that have difficulty
with the value -2 31 .
-
PNG four-byte unsigned integer
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
a four-byte unsigned integer limited to the
range 0 to 2 31 -1. The restriction is imposed in order
to accommodate languages that have difficulty with unsigned
four-byte values.
- PNG
image
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
- PNG
signature
-
From Portable
Network Graphics (PNG) Specification (Second Edition) (2003-11-10) |
Glossary for this
source
sequence of
bytes appearing at the
start of every
PNG datastream . It
differentiates a PNG datastream from other types of
datastream and allows
early detection of some transmission errors.
- point
-
From Mathematical
Markup Language (MathML) Version 2.0 (2001-02-21) |
Glossary for this
source
Point is often abbreviated `pt'. The value
of 1 pt is approximately 1/72 inch. Points are typically used to
specify absolute sizes for font-related objects.
- point
of regard
-
From User Agent
Accessibility Guidelines 1.0 (2002-12-17) |
Glossary for this
source
The point of regard is a position in
rendered content that the user is presumed to be viewing. The
dimensions of the point of regard may vary. For example, it may be
a point (e.g., a moment during an audio rendering or a cursor
position in a graphical rendering), or a range of text (e.g.,
focused text), or a two-dimensional area (e.g., content rendered
through a two-dimensional graphical viewport). The point of regard
is almost always within the viewport, but it may exceed the spatial
or temporal dimensions of the viewport (see the definition of
rendered content for more information about viewport dimensions).
The point of regard may also refer to a particular moment in time
for content that changes over time (e.g., an audio-only
presentation). User agents may determine the point of regard in a
number of ways, including based on viewport position in content,
content focus, and selection. The stability of the point of regard
is addressed by guideline 5 and checkpoint 9.4.
- pointer
-
From User Agent
Accessibility Guidelines 1.0 (2002-12-17) |
Glossary for this
source
This input modality label refers to all of
the generic input device requirements of this document as well as
those specific to the keyboard, except for the requirements of
checkpoint 11.4. This label is an indication that these
requirements have been satisfied for the pointing device.
- pointer
-
From XPointer Framework (2003-03-25)
| Glossary
for this source
pointer
A string conforming to this specification.
This specification defines the syntax and semantics of
pointers.
- pointer
part
-
From XPointer Framework (2003-03-25)
| Glossary
for this source
A portion of a pointer that provides a
scheme name and some pointer data that conforms to the definition
of that scheme. The XPointer processor evaluates a pointer part to
identify zero or more subresources within an XML resource.
pointer part
- policy
-
From The
Platform for Privacy Preferences 1.0 (P3P1.0) Specification
(2002-04-16) |
Glossary for this
source
A collection of one or more privacy
statements together with information asserting the identity, URI,
assurances, and dispute resolution procedures of the service
covered by the policy.
- policy
-
From Web Services Glossary (2004-02-11)
| Glossary for
this source
- policy
guard
-
From Web Services Glossary (2004-02-11)
| Glossary for
this source
A policy guard is a mechanism that enforces one or more policies. It is deployed on behalf of an
owner.