extension-element-prefixes ??

[Micheal Jacob]

Hi,
What are we achieving through extension-element-prefixes in this code ?

 
<xsl:stylesheet xmlns:xsl = "http://www.w3.org/1999/XSL/Transform" xmlns:saxon = "http://icl.com/saxon" extension-element-prefixes = "saxon" version = "1.0" > 
          <xsl :-o	 utput method = "text" /> 
          <xsl:template match = "/" > 
               <xsl:text >
      saxon :-P	 review .... </xsl:text> 
               <xsl:value-of select = "element-available('saxon :-P	 review')" /> 
               <xsl:text >
        saxon:jump   .... </xsl:text> 
               <xsl:value-of select = "element-available('saxon:jump')" /> 
               <xsl:text >
        preview .... </xsl:text> 
               <xsl:value-of select = "element-available('preview')" /> 
          </xsl:template> 
     </xsl:stylesheet

Thanks in adavance
Micheal

[John Lee]

Simplicity.

[Syed AliRaza Zaidi]

- More Appropriate Stucturing
- More Precise details about node type
- More powerfull way of Data Defination
- More proper control and access
- More reliability

[Micheal Jacob]

Hi Guys,

 
<xsl:stylesheet version = '1.0'   xmlns:xsl='http://www.w3.org/1999/XSL/Transform' >
<xsl:template match="/"> 
<xsl:value-of select="element-available('template')"/>
</xsl:template>
</xsl:stylesheet> 

it is giving false for me. if i put xsl:template it is giving true. so in this case if i put extension-element-prefixes='xsl' in what way will it help me ?
Is it a just a hint to code viewers/developers that xsl prefix is used ? or usage of extension-element-prefixes will create impact on other things (if yes on which)?
Please clear this.