The EXSLT Common package provides basic functions that expand upon the capabilities of XSLT. The namespace for the Common package ishttp://exslt.org/common.

exsl:node-set()

exsl:node-set() returns a node-set from a result tree fragment, which is what you get when you look at thexsl:variable instead of its select attribute to fetch a variable's value. This lets you process the XML created within a variable to process it in multiple steps.

exsl:object-type()

exsl:object-type() returns a string that indicates the type of the specified object.