>Where are the open source references and terms of licensing?

James,

In an earlier post you asked for some proof of open source 20 years ago.

Here's a snip from section 4 of the url referenced below, and a quote from the author 
of XMODEM, Ward Christensen:

4.   XMODEM

     Xmodem is a popular error recovery type protocol for transferring files
     between computers via serial, asynchronous communications.   Before
     learning more about Xmodem, it is important to hear what its author has
     to say:

          "It was a quick hack I threw together, very unplanned (like
          everything I do), to satisfy a personal need to communicate
          with some other people.  ONLY the fact that it was done in
          8/77, and that I put it in the public domain immediately,
          made it become the standard that it is"....."People who
          suggest I make SIGNIFICANT changes to the protocol, such as
          'full duplex', 'multiple outstanding blocks', 'multiple
          destinations', etc etc don't understand that the incredible
          simplicity of the protocol is one of the reasons it survived
          to this day in as many machines and programs as it may be
          found in!"

http://www.cubic.org/source/archive/hardware/modem/xmodem2.txt

Please note the date, August of 1977 (over 21 years ago), and the terms "public 
domain."  Correct me if I'm wrong, but I don't think you can get any more open than 
that.

The point is, we wouldn't be where we are today if it weren't for the unselfish 
efforts of the hacker pioneers that proceeded us!

Rick

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