Modifying the GPL itself (was: Social Contract GR's Affect on sarge)

[Herbert Xu <herbert@gondor.apana.org.au>]

Glenn Maynard <g_deb@zewt.org> wrote:
>
>> [2] E.g., Stallman doesn't think that the GPL itself should be free.
> 
> The GPL can be modified, as long as you remove the preamble and don't
> call it the "GPL".  It's not DFSG-free, but it's close, and I suspect

In that case I must've misinterpreted the first parragraph of the
license text.  It says:

 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

Can you please show me how the last part of the sentence is restricted
to the preamble?

Thanks,
-- 
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