A simple way to represent relational data

A simple way to represent & present relational data, i.e. where people relate to each other, or companies, or even variables. here's a simple representation of correlations between variables using the free Netdraw http://www.analytictech.com/downloadnd.htm
The data can be easily structured using a text file like
(I am including correlations AND p values of each of them for Males and Females)
*Node data Variable Variable1 Variable2 Variable3
*Tie data from to corrM pcorrM corrF pcorrF
Variable1 Variable2 0.43 0.00 0.44 0.00
Variable1 Variable3 0.89 0.00 0.89 0.00. etc