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navigation bar.
Alternate
Designates substitute versions for the document in which the link occurs. When
used together with the lang attribute, it implies a translated version of the
document. When used together with the media attribute, it implies a version
designed for a different medium (or media).
Stylesheet
Refers to an external style sheet. See the section on external style sheets
[p.190] for details. This is used together with the link type "Alternate" for
user-selectable alternate style sheets.
Start
Refers to the first document in a collection of documents. This link type tells
search engines which document is considered by the author to be the starting
point of the collection.
Next
Refers to the next document in a linear sequence of documents. User agents
may choose to preload the "next" document, to reduce the perceived load time.
Prev
Refers to the previous document in an ordered series of documents. Some user
agents also support the synonym "Previous".
Contents
Refers to a document serving as a table of contents. Some user agents also
support the synonym ToC (from "Table of Contents").
Index
Refers to a document providing an index for the current document.
Glossary
Refers to a document providing a glossary of terms that pertain to the current
document.
Copyright
Refers to a copyright statement for the current document.
Chapter
Refers to a document serving as a chapter in a collection of documents.
Section
Refers to a document serving as a section in a collection of documents.
Subsection
Refers to a document serving as a subsection in a collection of documents.
Appendix
Refers to a document serving as an appendix in a collection of documents.
Help
Refers to a document offering help (more information, links to other sources
information, etc.)
Bookmark
Refers to a bookmark. A bookmark is a link to a key entry point within an
extended document. The title attribute may be used, for example, to label the
55 24 Dec 1999 18:26
Basic HTML data types
bookmark. Note that several bookmarks may be defined in each document.
Authors may wish to define additional link types not described in this specification.
If they do so, they should use a profile [p.68] to cite the conventions used to define
the link types. Please see the profile attribute of the HEAD element for more
details.
For further discussions about link types, please consult the section on links in
HTML documents [p.145] .
6.13 Media descriptors
The following is a list of recognized media descriptors ( %MediaDesc [p.266] in the
DTD).
screen
Intended for non-paged computer screens.
tty
Intended for media using a fixed-pitch character grid, such as teletypes,
terminals, or portable devices with limited display capabilities.
tv
Intended for television-type devices (low resolution, color, limited scrollability).
projection
Intended for projectors.
handheld
Intended for handheld devices (small screen, monochrome, bitmapped
graphics, limited bandwidth).
print
Intended for paged, opaque material and for documents viewed on screen in
print preview mode.
braille
Intended for braille tactile feedback devices.
aural
Intended for speech synthesizers.
all
Suitable for all devices.
Future versions of HTML may introduce new values and may allow parameterized
values. To facilitate the introduction of these extensions, conforming user agents
must be able to parse the media attribute value as follows:
1. The value is a comma-separated list of entries. For example,
media="screen, 3d-glasses, print and resolution > 90dpi"
is mapped to:
24 Dec 1999 18:26 56
Basic HTML data types
"screen"
"3d-glasses"
"print and resolution > 90dpi"
2. Each entry is truncated just before the first character that isn t a US ASCII letter
[a-zA-Z] (ISO 10646 hex 41-5a, 61-7a), digit [0-9] (hex 30-39), or hyphen (hex
2d). In the example, this gives:
"screen"
"3d-glasses"
"print"
3. A case-sensitive [p.49] match is then made with the set of media types defined
above. User agents may ignore entries that don t match. In the example we are
left with screen and print.
Note. Style sheets may include media-dependent variations within them (e.g., the
CSS @media construct). In such cases it may be appropriate to use "media=all".
6.14 Script data
Script data ( %Script; [p.266] in the DTD [p.265] ) can be the content of the SCRIPT
element and the value of intrinsic event attributes [p.251] . User agents must not
evaluate script data as HTML markup but instead must pass it on as data to a script
engine.
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zanotowane.pldoc.pisz.plpdf.pisz.plcs-sysunia.htw.pl
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