Since 9.2.1 we have (env "NEWLISPDIR").
But this is only a valid variable in the running newlisp-process.
So it would be usefull to let the newlisp installer set a system-wide user enviroment variable,
so other applikation could know where newlisp is stored.
On my german WIN it would be:
NEWLISPDIR = C:Programmenewlisp
The installer defaults to this path, but what happens when the user put it elsewhere?
Other systems does similar, so I have a Tcl_DLL and a Tk_DLL in HKEY_CURRENT_USEREnvironment.