Exploring the standard structure of a style

Regardless of the tool, you are using to create your style, it is worthwhile that you understand the basic syntax and structure of your documents. You may need to modify the styles after creation, and the features you need to add may not be supported by the program, or you may be simply on a server where the only way to edit is using a text editor. Besides, you will write XML code in the examples in this chapter.

A style always starts with a section, as shown in the following code fragment:

<?xml version="1.0" encoding="UTF-8"?> 
<StyledLayerDescriptor version="1.0.0"    xmlns="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc" 
  xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd"> 

The first line is the XML declaration, common to any XML document and not only to...