The programs in this folder come from the example programs of BBC BASIC
for SDL 2.0 (https://github.com/rtrussell/BBCSDL), distributed under the
following licence. Each program's header names its original author and
lists the changes made for U64 BBC BASIC (zlib licence, condition 2).

Copyright (c) 2021, Richard T. Russell, http://www.rtrussell.co.uk/

This software is provided 'as-is', without any express or implied
warranty.  In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software.  If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

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The programs in files/ come from the example programs of BBC BASIC (Z80)
by R.T. Russell, as distributed with agon-bbc-basic
(https://github.com/breakintoprogram/agon-bbc-basic), under the same
licence:

Copyright (c) 1984-2000 R.T. Russell

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
