"J.W. Bizzaro" wrote: > > The nodes in your screenshot are "Add" nodes, and they have a certain > function: To add strings. It's pretty much what "flag" and "filename" do, > except in my example the strings can be changed: > > For "flag", the user can change the string with a pull-down menu. > > For "filename", the name of the connected document is the string. > > Perhaps where you have set "constant", "INI", and even "POV", we would have a > "variable" node, or something to hold these values. And with the ability to create and save subnets (compiling), we can have a node that is a subnet containing one "Add" node and one variable node, and we can name it "flag" or whatever. Jeff -- J.W. Bizzaro jeff at bioinformatics.org Director, Bioinformatics.org: The Open Lab http://bioinformatics.org/~jeff "All those scientists--they're all alike! They say they're working for us, but what they really want is to rule the world!" -- Angry Villager, Young Frankenstein --