The CleanCompiler.exe accepts directory list through the -P compiler parameter, but not an additive way, so I cannot define two or more -P <dirname> at the same time. CleanCompiler -P "C:\Program Files\Clean 2.1.1\Libraries\StdEnv" -P C:\myLibrary -wmt does not work. :( -- Best regards, aroan mailto:aroan at aries.ektf.hu