DOCBOOK ULINK PDF

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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Knowing the Properties of the xlink: In DocBook 4, a title element is permitted as a child of chapterbut also as a child of chapterinfo. If they were of type IDREF, then the elements would have to be in the same file as docboo associated xml: The middle column shows DocBook 4 syntax, and the right columns shows DocBook 5 syntax. The annotation element’s annotates attribute accepts multiple space-separated values, so any annotation can be associated with more than one annotated element.

DocBook 5 also has consistent placement of the info element relative to a separate title element. However, not all processors support both characters, so you should test. Likewise, DocBook fragments can more easily be embedded in other compound document types.

Simplified DocBook DTD: Element ulink

docbkok There are no predefined role values. That’s because almost all elements have a set of attributes that are defined in the XLink namespace, such as xlink: If you copy the url to the ulink element content and add the zero-width spaces there, you will find that the stylesheet no longer treats them as the same and repeats the URL after the text.

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An annotation is associated with an element using attributes, not by placement, and the association can go in either or both directions.

That adds a target attribute to the HTML anchor tag. If you try to insert zero-width spaces in the ulink url attribute to allow breaks in the printed form, you will find that the URL no longer works as a link. The DocBook stylesheets currently only handle xlink: Olink docbolk generated text. The main difference is that the document’s root dobook must have the DocBook namespace attribute and a schema version attribute.

To make them more flexible for modular documents, the annotates and annotations attributes are declared as attribute type CDATA.

Of course, this is only useful for online formats. Fortunately, a guide and conversion stylesheet exist to help transition DocBook 4 documents to DocBook5. The title can be in either location, but not both. This is similar to the DocBook 4 link and xref elements. Either direction is sufficient to establish the association. Don’t forget to add the XLink namespace declaration into the root element of your document, for example:.

Writing documentation with DocBook-XML 4.3

They are each described in more detail in the following sections. An olink-style link from any element can be formed using two attributes. All hierarchical elements and many block elements can have a metadata container. That includes the special docbookk of the default namespace when the attribute does not define a prefix, in which case docbooj element that is in scope and without a prefix is in that namespace.

First consult DocBook V5. Empty Links Using linkend This notation is semantically equivalent to an xref. You use the ulink element, putting the target URL in the ulink’s url attribute.

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docbook message

Another major difference between DocBook 4 and DocBook 5 is the schema language. The way it works is you set the stylesheet parameter ulink. On the other hand, the XLink attribute xlink: This is similar to the DocBook 4 ulink element, which was removed in DocBook 5.

Fewer tools for validation. It is allowed to use text content or leave a link completely empty. The element may have different content models in different contexts, to manage titled and non-titled elements, for example.

It is relatively easy to read in its compact form. The following is an example of an annotation element associated with a chapter element:. At the same time, the familiar DocBook linking attribute linkend upink also been added anywhere an XLink can be used. Note that the root element is now d: RelaxNG permits an element to have a different content model when the ulunk appears in a different context. Docbbook of the parameter settings, if the URL exactly matches the ulink text string or the ulink element is empty, which produces the same resultthen the stylesheet does not repeat the same URL in brackets or a footnote.

Internal link with generated text. These attributes are in their own namespace named http: Regardless if it is an empty link with xlink:

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