[news.eclipse.technology.ecesis] Re: Copyright issue and other issues

["Bjorn Freeman-Benson" <bjorn@xxxxxxxxxxxx>]

Dwight,
You are almost, but not quite right in your post:
> ... you can take the material, use it and extend it any way you want.

The CPL/EPL gives you (the generic you) a license to use the material any
way you want.
The CPL/EPL gives you (the generic you) a license to extend the material any
way you want as long as you do not change the original material.
If you change the original material and do not distribute the result, i.e.,
you don't give it to anyone, you don't use it in a course, etc., then you do
not have the release the changes.
But if you change the original material and you distribute the result, then
you are required to release your changes under the CPL/EPL. The easiest way
to release it is to contribute the changes to ECESIS , but other mechanisms
are allowed.

The question, of course, now comes as to "what is a change in the material?"
Changing the text or diagrams on an existing slide is clearly a change.
Creating a new slide in another presentation, a new slide that clarifies or
explains a point in an ECESIS slide is clearly not a change.
Is adding a new slide to an existing ECESIS presentation a change - that's a
question I am not qualified to answer, and thus I have cc'd this post to the
license@xxxxxxxxxxx email alias for the experts to answer.

Simple summary: (1) do whatever you want with the material as long as you
don't show it to anyone else; (2) if you make changes and show the material
to others, you are required to release those changes under the CPL/EPL.

Bjorn