[webcomponents] I need clarity on the document license before I can continue editing (#415)

The custom elements spec says

> Copyright © 2016 W3C® (MIT, ERCIM, Keio, Beihang). W3C liability, trademark and permissive document license rules apply. 

linking to

https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document

which is an unorthodox license that seems to want to impose a lot of restrictions on how text reuse must be marked.

I would of course prefer CC0, or failing that CC-BY. But if we must stick with the license I need a clear statement of how the work must be cited, i.e. what must appear in the acknowledgements. The linked page at https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document is not clear to me. I know for CC-BY I can attribute like 

> The image of two cute kittens in a basket used in the context menu example is based on a photo by Alex G. (CC BY 2.0)

but that document seems to want me to include a lot more notices (perhaps unacceptably many) when using the text elsewhere. Since this document is largely destined for upstreaming into other specs, this is a real concern.

@plehegar can you clarify whether we can change the license, or failing that whether https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document has a short (one-sentence) attribution form like CC-BY does?

I cannot make any further edits until this is resolved favorably.

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/issues/415