This is from the QUICKSTART.txt file:
To setup Rueda, you must assign "RUEDA:" to the directory where all the graphic files reside. As it was compressed originally, you must assign "RUEDA:" the the DATA directory. After that, you can stick the actual program anywhere you want, it just needs to find its files in the assign "RUEDA:"
Example: "Assign RUEDA: ram:DATA/"
I mentioned in the description that I can't believe I expected people to do this step using the CLI, but it's been 34 years since I coded it, so I can't ask my 16-year-old self what he was thinking!