A profile is a configuration file which is used to store the various settings for a machine. A Mach3/Mach4 profile has to be created and configured for each machine it controls. Mach3 uses XML files to store this data (see “What is an XML?”) while Mach4 uses INI files (see “What is an INI?”). To properly save your Mach4 profile, go to Help>Support>Package Current Profile. This will create a .m4prof file with your packaged settings that can then be imported using the Mach4 Loader.