> BTW, I would love to get some comments on this, especially from Jean-Marc, as > it is the PL which would have to implement all of it. (I know that the PL can > do much of it already). OK, these are just some quick comments I can make. Note that I read everything quickly, you guys generate a lot more stuff than I have time to read... I'd like to comment on your use of "processor", "flag" and "filemane" type of nodes. For Overflow (PL), a Node is a Node and there's no such discrimination. I'm attaching a screenshot (taken with vflow) of how I see building command lines in Piper. Here, the Constant would contain the string -I, and the INI and POV inputs would contain the two filenames (as strings). The ExecStream Node would have povray as a parameter. The Add nodes would just concatenate strings together. Now, the whole network you see could be used as a simple node that would take two strings as input. Does that make sense to you? Jean-Marc -- Jean-Marc Valin Universite de Sherbrooke - Genie Electrique valj01 at gel.usherb.ca -------------- next part -------------- A non-text attachment was scrubbed... Name: pov.gif Type: image/gif Size: 25949 bytes Desc: not available Url : http://bioinformatics.org/pipermail/pipet-users/attachments/20010212/4b273cb9/pov.gif