Sometimes user input is essential for your script... the next best to no GUI is a simple GUI. I stated in a previous post that user interfaces for your ABAQUS scripts should be avoided wherever possible because they complicate the code and make it more time consuming to change. If you really must have a GUI then the simplest one possible should be used. The most basic is a kernel dialog where the user enters data into a text box, without any kind of feedback. This was used in