[metapost] Typos in mplib api document

[mskala at ansuz.sooke.bc.ca]

On Thu, 8 Nov 2012, xiolyxioly wrote:
> >\NC int \NC random_seed \NC 0 \NC set this nonzero to force a specific
> random seed\NC \NR
>
> What are these random seeds used for? Why would I want to force a specific
> one?

The METAFONT language includes a random number feature, as described in
Chapter 21 of the METAFONTbook.  You might want to force a specific one in
order to ensure repeatability between runs.
-- 
Matthew Skala
mskala at ansuz.sooke.bc.ca                 People before principles.
http://ansuz.sooke.bc.ca/