An exclude list is a file that contains a list of
tests in a test suite that should not be run for some
reason. The list contains path names that uniquely
identify tests to be excluded. When the JT Harness harness prepares to
run a test, it checks to see if the test is on the exclude
list, if it is, the test is ignored during the test run.
Exclude list files conventionally use the extension .jtx
and may be supplied with a test suite or downloaded from a web site.