An attribute such as xlink:href=”” refers to an arbitrary URL. This is similar to the DocBook 4 ulink element, which was removed in DocBook 5. ULink — A link that addresses its target by means of a URL (Uniform Resource Because DocBook is harmonizing towards XML, this restriction cannot easily be. Keywords: external links, simple XLinks, xlink:href, ulink . if you want to insert a book title with an additional link, in DocBook 4 it has to be written like this.
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RelaxNG permits an element in different contexts to have different content models.
Of course, just adding a namespace declaration may not make a DocBook 4 into a valid DocBook 5 document. Knowing the Properties of the xlink: Placing this annotation element in the chapter’s info element is simply a convenience.
The text in an alt element may not appear in the output, depending on the application. The title can be in docbokk location, but not both.
Simplified DocBook DTD: Element ulink
If not, then the stylesheet will report that the module’s root element has ulonk matching template. That does not necessarily mean those elements are in the namespace, just that the namespace is recognized. Regardless of the text content, you have to choose between the attributes xlink: Correct such links and remove the text:. In DocBook 5, only a single metadata element is needed because it uses RelaxNG as the schema language. In DocBook 5, the info element always comes after any separate title element and before any other content.
This allows elements from other namespaces to be mixed into DocBook documents without creating element name conflicts.
In DocBook 4, a bookinfo comes after a book’s title element, but a chapterinfo element comes before a chapter’s title element. Internal and External Links Examples With linkend vs.
They are each described in more detail in the following eocbook. This is mostly unnecessary as it is overly verbose, difficult to read, and does not add any value.
It adds the following two new elements and defines the semantics of associating an annotation with an element.
DocBook 5 has a new system for associating annotations with elements. It is relatively easy to read in its compact form. This is equivalent to the following xref notation:.
DocBook 5 also adds new concepts. In DocBook 4, only specialized elements are used for creating links within and between documents. Docook link and xref elements were retained in DocBook 5. The element may have different content models in different contexts, to manage titled and non-titled elements, for example. Of course, this is only useful for online formats.
There are no predefined role values. Universal linking in DocBook 5. Generally you should set ulink. Using linkend leads always to an internal link and docbbook semantically equivalent to xref. This notation is semantically equivalent to an xref.
Setting up the tools.
These other versions contain the same element and attribute names. Fewer tools for validation. Creating a link from your DocBook document to a website is easy. A single info element name is used as the metadata container for all elements.
The DocBook stylesheets currently only handle xlink: In DocBook 5, most elements that generate some output can be made into docbolk link. If they were of type IDREF, then the elements would have to be in the same file as the associated xml: