Scratch is a software developed by the Lifelong Kindergarten group at the MIT Media Lab to teach programming concepts. It is freely distributed under an open source license which allows copying and distribution with required copyright and warranty notices. The Scratch logo and cat are trademarks of MIT.

1. Scratch
Copyright (c) 2008 Massachusetts Institute of Technology
Scratch is developed by the Lifelong Kindergarten group at the MIT Media Lab.
See http://scratch.mit.edu
The Scratch logo and the Scratch cat are trademarks of MIT.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and accompanying documentation and media files (the "Software") to
distribute the Software, including the right to use, copy, publish, or
distribute copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies of the Software.
If the software is published or distributed, the following statement shall be
displayed in a visible place on a website or on distribution media such as CDs:
Scratch is developed by the Lifelong Kindergarten group at the MIT Media Lab.
See http://scratch.mit.edu
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.