Since 1978. TRS-80 model 1. I designed microprocessors for AMD and Sun for 10 years. What's your point? I said NEWBs aren't going to get it. As evidenced by the fact that people on this board are already confused about what button does what.
well I just dont get it...its very clear to me. My point is that its pretty standard stuff. When you select "SAVE" on any computer you are saving on top of the file. In other words, your original file is now gone. Been that way for along time. The new button is labeled "Save a copy"...what else could this possible mean, but it saves a copy (which you just modified)?
pretty simple stuff imo.