[9fans] mv macro set documentation - found!

[Pietro Gagliardi]

Hello. I was noticing the Plan 9 Documentation Project needed info on  
the mv macro set. Apparently, according to http://troff.org/ 
macros.html, a Rick Richardson (whose email address is on that page,  
fortunately) gave me a pdf containing the original paper on mv. I  
will be putting it in /n/sources/contrib/pietro later - but beware;  
the pdf is humongous, and can choke page (or whatever pdf viewer you  
use) - I suffered.