displaying an html non-breaking space '& nbsp ;'

I've looked through the archive cant seem to find a definitive answer.
Within an XSL template, what's the best/easiest way to display a nbsp?

<xsl:template match='testbutton'>
     <input type='button' value='button1'></input>
     ...How do I insert a '& nbsp ;' between the buttons?
     <input type='button' value='button2'></input>
</xsl:template>



 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list