I have been running Regina Rexx 3.5 on Mac Snow Leopard for 5 years or so. Now I have had to upgrade to Mavericks I guess I should upgrade REXX as well, so I have downloaded REXX 3.7. This comes in a TAR gz file ('Regina-REXX-3.7-i386-x86_64-apple-darwin12.2.0.tgz') which expands into a whole bunch of folders. Has anyone out there found the documentation that indicates how to perform the subsequent manual installation required? Interestingly, the 'REXX' folder is empty, so I'm guessing that I don't just copy the lot to /usr/bin/.