16. WAP Specific
Extensions to CSS
WAP
CSS includes some WAP specific extensions to web CSS2, which means
some properties are defined in WAP CSS but not in web CSS2. These WAP
specific extensions are very useful for mobile Internet browsing
applications. The WCSS properties in the extensions can be grouped
into the following three categories:
Access
key -- This category contains only one WCSS property:
-wap-accesskey. This WCSS property is used to specify a shortcut key
for an XHTML MP element.
Input
-- The WCSS properties in this category are used to specify whether
a text field can be left empty and what type and how many characters
can be entered in a text field.
Marquee
-- The WCSS properties in the marquee category are used to scroll
some content across the screen. For example, if you have a line of
text that is wider than the screen width, you can make use of the
WCSS properties in the marquee category to generate a text scrolling
effect instead of displaying the text on multiple lines.
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