==Importing a New Simulation Model==
Both process models and subcircuit models can be imported from simple plain text files with a ".TXT' file extension. Importing a simulation model from a text file is a very simple and straightforward procedure. Under the File Menu of the Device EditorManager, choose "Import Simulation Model from Text File...". An "Open" dialog box will appear for you to locate the model text file. Locate the file and click OK. Follow the program prompts to choose a category, enter a description and keyword and choose a manufacturer for the new model to be imported. These fields may be left blank and filled out later through the Edit Model Dialog. Click OK when you are done. A message will indicate that you have loaded your (subcircuit or process) model file, and that a simulation model was created assuming that it was successfully loaded. The program will then fix the polynomial controlled sources, if any, and notify you of encountered problems. Click OK after each message box. When your model is loaded successfully, the program will notify you of the completion of the import process.
If your file does not load, make sure the source file is not open in another application. Your model text file can contain the ".model" lines or Netlist subcircuit codes for several different models. All of these models can be imported together in a single process. In that case, the program will guide you through the same process for each individual model.
==Resolving SPICE Language Incompatibilities==