What means "Pal technology"

I was reading nat 623 documentation http://techcommunity.softwareag.com/ecosystem/documentation/natural/nat633win/print/webtech.pdf
and saw refereces about Pal techology.
Do you now what is it?

PAL is a Software AG proprietary protocol used to communicate with a NDV server in a SPoD environment. Similar to use the Broker ACI to communicate with a Natural RPC server or to use DCOM to communicate with a NaturalX server.
That is, if a client communicates using PAL the server is a NDV server.


Ok Klaus! Tk