I was wondering if anyone could describe, or point me to a link of, the various 
r.grow metrics parameter definitions: euclidian, maximum, and manhattan.

Also, are the comments regarding how r.grow decides how to grow between two 
equally eligible cells here 
(http://www.nabble.com/-GRASSLIST%3A7611--r.grow-to8629593.html#a8629593) still 
valid? I would like to add this information to the docs, and AFAICS, main.c 
hasn't changed much since Glynn's last edit 21505 back in late November, 2006.

Thanks,

~ Eric.


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