I recently installed XQuartz 2.7.8 on an El Capitan 10.11.1 system. I asked Apple tech support about this (didn't get a definitive answer...they thought maybe it was some way of identifying a file version): what is the significance of the '40-' prefix of the file '/etc/paths.d/40-Xquartz'? 'udev' on Linux uses numeric prefixes to control the order in which 'udev' processes configuration files; do the numeric prefixes of path_helper files control the order in which path statements are appended to the system PATH? If numeric prefixes are a feature of path_helper is that aspect of path_helper files documented anywhere? -- Tom Carpenter Computer Systems Specialist Biology Department 221 Morrill Science Center 611 North Pleasant Street Amherst, MA 01003-9297 (413) 577-2311 (P) (413) 545-3243 (F)