-The Common Trace Format (CTF) testsuite is intended to validate the conformance of CTF readers.
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+The Common Trace Format (CTF) test suite is intended to validate the
+conformance of CTF readers.
+
+To run the test suite:
+
+ 1. Set the `CTF_READER_BIN` environment variable to your CTF reader
+ executable, e.g.:
+
+ export CTF_READER_BIN=my-ctf-reader
+
+ 2. Execute the `run.sh` script found in the `tests/x.y` directory,
+ where `x.y` is the CTF specification's version you want to check,
+ e.g.:
+
+ ( cd tests/1.8 && ./run.sh )
+
+You may also set the `CTF_READER_OPTS` environment variable to options
+to pass to the CTF reader defined by `CTF_READER_BIN`.