The OS X package system does not provide an uninstall function, and overall is quite a bit less capable than the package management systems in supported Unix/Linux systems. In release 4.0.7 and later, when a new release is installed, the preinstall script will explicitly clear all of the files of an existing package if found, as is done by the installer on other systems. In earlier releases, a new release would simply overwrite the existing release.
To uninstall, the files must be removed manually. This is easy, as all files are installed under /usr/local/xictools. One should also clear the package ``receipt'' from the OS X database with the terminal command
pkgutil -forget packagenameif the program is being removed permanently. The packagename is the name of the package as known to Apple, which is in a form like ``XicTools.Xic.4''. All of the Whiteley Research installed packages can be listed by name with the terminal command
pkgutil -pkgs | grep XicToolsThis will provide the Apple package names.