| <xsl:processing-instruction> |
| <xsl:processing-instruction name=”process-name” > </xsl:processing-instruction> |
| The xsl:processing-instruction element writes (generates) a processing instruction to the output. The content of this element becomes the text of the processing instruction. The syntax is: |
| <xsl:processing-instruction name=”pi_name”>
processing instruction text goes here … </xsl:processing-instruction> |
| This text should not contain any character references. In other words, all characters must be directly represented by the selected character encoding (i.e., an < cannot be represented by an <). |
| This is not a self-closing element. The separate closing element is mandatory. |
| name=”process-name” |
| The mandatory name attribute is the name of the processing instruction. The name cannot contain acolon (:). |
| Processing instructions are rarely used in XML. However, the W3C standard permits the application of a CSS (Cascading Style Sheet) file to an XML document. This is accomplished with an <?xml_stylesheet … ?> processing instruction which is directly compariable to the HTML <link type=”text/css” href=”style.css> tag. |
| This code fragment demonstrates how to do this: |
| <xsl:processing-instruction name=”xml-stylesheet”>
type=”text/xsl” href=”style_rules.css” title=”Large Print” </xsl:processing-instruction> |
| This creates the following tag: |
| <?xml-stylesheet href=”style_rules.css” type=”text/css” title=”Large Print”?> |