[rrd-developers] ROL and ROR for RPN

[Steve Shipway]

>IMHO it would be useful to have a look at Postcript stack manipulation
operators.
>http://www.ugrad.math.ubc.ca/Flat/stack-ref.html

Postscript's ROLL operator looks identical to the proposed ROTATE operator
from the previous post.  ROLL is a better name though.

The COUNT, COPY (being a genericisation of DUP) and INDEX look useful as
well. (But COUNT would need to be renamed as we already have one of those)

Steve Shipway
s.shipway at auckland.ac.nz


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