This is a constructor for the
that can be provided at the top of an XML document
to provide information about the class of document,
i.e. its DTD or schema.
Also, there is a method for converting such a
object to a character string.
the system URI that locates the DTD.
the identifier for locating the DTD in a catalog, for
example. This should be a character vector of length 2, giving
the public identifier and a URI. If just the public identifier
is given and a string is given for
the name of the root element in the document. This should be the first parameter, but is left this way for backward compatability. And
An object of class
Duncan Temple Lang
http://www.w3.org/XML XML Elements of Style, Simon St. Laurent.
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d = Doctype(name = "section", public = c("-//OASIS//DTD DocBook XML V4.2//EN", "http://oasis-open.org/docbook/xml/4.2/docbookx.dtd")) as(d, "character") # this call switches the system to the URI associated with the PUBLIC element. d = Doctype(name = "section", public = c("-//OASIS//DTD DocBook XML V4.2//EN"), system = "http://oasis-open.org/docbook/xml/4.2/docbookx.dtd")
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