MII XSLT engine

Hi,

I am wondering about which XSLT engine MII is using. I have build build a java XSLT translation direcly running in Netweaver which is a lot slower than the same transformation using the MII action in a transaction.

In my java application I used the normal JAXP XSLT API and I supped it should be faster than the MII action.

Does the MII use a special XSL processor, maybe a SAXON engine?

Thanks in advance!