The last version of HD-COPY should be 2.2R, and the version numbers of 2.X after that are all changed. I once changed the version number and the author's name by myself, and the version I changed was later included in a CD, wow...
Later, domestic experts (Yao Changli and others) made HD-COPY 3.0, and I once called him to ask about this software. In fact, this software is completely rewritten and has no relationship with HD-COPY at all. The format of the floppy disk is spiral, so the speed is much faster than HD-COPY. Just because most people are used to using HD-COPY, the interface borrowed the interface of HD-COPY. Just the version number is set as 3.0. They also made a FOR WINDOWS version based on this version, and the version number is 1.0.
HD-COPY 3.0, HD-COPY FOR WINDOWS 1.0 and the original HD-COPY should be viewed separately. The most fundamental difference should be the way of formatting the floppy disk.