Polycom VR-6000 ユーザーズマニュアル

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Developer’s Guide SoundPoint IP / SoundStation IP 
2 - 2
Unsupported elements and attributes are described in 
 on page 
Basic Tags
The following basic tags are supported:
—Defines the document type
—Defines a comment
<!DOCTYPE>
The <!DOCTYPE> declaration is the very first thing in your document, before 
the <html> tag. This tag tells the browser which XHTML specification the 
document uses. XHTML 1.0 specifies three XML document types: Strict, 
Transitional, and Frameset.
• XHTML Strict
— Use this DTD when you want clean markup, free of presentational 
clutter. 
For example, 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
• XHTML Transitional
— Use this DTD when you need to use XHTML's presentational features.
For example, 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 
Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
• XHTML Frameset
— Use this DTD when you want to use frames.
For example, 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 
Frameset//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
This tag does not have any attributes.