Hello, In chapter 2 - pigi, User's Manual said that the number typed in Tk panel when running simulation is time to stop. For example: If I type 400 then simulation will run 400 iterations. What is time unit using in Ptolemy ? 1 iteration = ? Thank you, Do Trong Tu ---------------------------------------------------------------------------- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]