13.4.7 Specifying nonstandard values for declarations
You can specify different values for several header fields or declarations; however, unless you know you need nonstandard values, you should not need to change any of these. For some settings, the default values vary based on whether the output type is HTML, XHTML, or XML:
; UseXMLRoot = Yes (default) or No (when writing DocBook entity files)
; XMLRoot default is "html" for XHTML, or "doc" for generic XML.
; UseHeadAndBody = Yes (HTML/XHTML default)
; or No (generic XML and DITA default)
; ContentType = text/html (default for HTML and XHTML)
; or application/xml (default for XML); try not to use text/xml
Content-Type is part of MIME, and is used by document-processing tools. Unless you know exactly what you want and need only a mechanism to specify it, leave this setting alone. For more information, see:
http://www.w3.org/Protocols/rfc1341/4_Content-Type.html
For XHTML, you can suppress the <?xml...?> declaration, as required by some browsers:
;UseXMLDeclaration = Yes to start with <?xml...?>, or No to omit
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