[metapost] documentation of length operator

[Oliver Heck]

Karel Horák schrieb:
> Stephan Hennig napsal(a):
>   
>> Another point is that "The METAFONTbook" isn't electronically
>> available, AFAIK.
>>
>>
>>   
>>     
> It is not true: see
> ctan/systems/knuth/mf/mfbook.tex
>
> Karel Horak
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>   
AFAIK this is a version without illustrations.

Regards,
Oliver