Steve Silberberg, software contractor and owner of Fatpacking, recalls, "Almost 30 years ago, there was a "see" program for the IBM PC -- I don't recall whether it was a .com or .exe file -- that allowed users to view, search and subsequently edit the bytes comprising executable images." (Editor's note: there also was a pervasive see.exe virus, so be careful if you go looking for a copy of "see" to try out.) "'See' was typically not all that useful, except in blocks of stored text, which you could then change to say whatever you wished. I used it some, but Windows essentially killed it for me. I imagine there are ways of doing this now, but I'm not much of a hacker."
Not everybody has to miss long-standing features, notes Dan Ritter, a sysadmin at a financial services firm. "I started using Linux in 1993 when my Windows box crashed in the middle of an important document and wiped out hours of work. Software need not go obsolete -- since that time, every program I have ever used has continued to be available to me. In almost every case, the programs have been improved, and in no case does the "old program mysteriously stop working."
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What features do you miss?