I remember it I think Lotus lost the suit. They could not copyright text commands I think.
It was used against Apple but Apple won because their GUI was different from Xerox.
500 is a lot for Lotus 123 and $100 clones sure look tempting.
Wikipedia says Lotus won that case." In February 1990, the case went to court and on June 28, the court ruled that Paperback Software's product, by copying Lotus 1-2-3's look and feel menu interface, violated Lotus's copyright.[10] Osborne stepped down from Paperback Software the same year."
Ok thanks I was mistaken. There was also a Procomm suit.