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Greetings, all.  This is just a quick note to let you know that a new
version of the sna package (v0.51) is now available on the R web site.
For those of you who are unfamiliar with it, R is a freely available
statistical computing platform (see  The sna
package is a plug-in library for the R system, which supports various
social network analysis and visualization functions.  This latest
version includes a number of performance enhancements, newly reworked
two- and three-dimensional graph visualization tools, and some other
bits and pieces of added functionality.  Interested parties can obtain
sna from the CRAN web site:

or my own distribution page:



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