AFAIK, it was only supported for VS Fortran 2, and there was an extra set of 
libraries necessary to enable the VF code which you installed on top of the 
normal Fortran install. There was a second publication that discussed the VF 
support (developed at Cornell as part of the Cornell National Supercomputing 
Facility). They had a highly experimental 12 way (two 6 ways glued together 
somehow) and the VF code could also enable using the VFs on the "other" machine 
as well as the one you were on. I might have a copy of the extra pub somewhere; 
I know Rice's copy is probably gone. 

I believe that Ken Kennedy at Rice added some code for VS PL/1 to use the thing 
(that's why we had one), but you had to program specially to use it, and that 
code was never widely distributed (it came with PTOOL (a nifty automated 
parallelism analyzer for Fortran), if you had it, as a freebie, I think. 

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