[metapost] documentation of length operator

[Taco Hoekwater]

Stephan Hennig wrote:
> Larry Siebenmann schrieb:
> 
>> This list is a sign that metapost is alive and aims to be autonomous.
> 
> Another point is that "The METAFONTbook" isn't electronically
> available, AFAIK.

In all likelihood, it never will be. Addison-Wesley is a rather
convervative publishing house.

> Where should patches be sent to?

You could email me or Troy Henderson <thenders at gmail.com>, but
straight back into the repository would be my top choice.

If you register a user account at supelec and let me know the name
of that, I can give you write permission to the SVN tree.

Best wishes,
Taco