Raul Miller wrote:

> For example, if I were writing an implementation of J, I would
> prefer to incorporate the relevant specifications as embedded
> comments, if not user accessible documentation.  But I doubt
> either would be legal.  And, while I personally am comfortable
> with the idea that if I were to write and release a J implementation
> (that did not incorporate the actual text of the specification in the
> body of code) that ISI would not take legal action against me, I'm
> not sure that other people have the same level of comfort.

The licence in the PostScript manual may be a model.

Adobe reserves rights on

- the trademark "PostScript"

- the language specification

However it allows anyone to

- write programs in PostScript

- write printer drivers that generate PostScript

- write software to interpret programs in PostScript

- copy Adobe's copyrighted list of commands to the extent necessary to
use the PostScript language for the above purposes

Best wishes,

John


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