Guidelines for managing resources

.Xdefaults-hostname files are searched sequentially. Consequently, some performance gain may be realized by putting resource specifications for frequently used clients (such as pmwm and xdt3) in front of resource specifications for other clients (such as xclock).

If you have a resource specification that applies to a specific client and a global resource specification that applies to all clients for the same resource, place the specific definition before the global definition.

These guidelines are particularly relevant if your .Xdefaults-hostname file is large.