This dialog handles import of the source FEA model into ProTOp's internal format.
1. If present, check or uncheck additional load cases files.
2. If present, check or uncheck additional geometry (surfaces) files.
3. If desired, check any of the options to generate surfaces from BC nodes. If such an option is checked, one surface is generated from all corresponding BC nodes, belonging to a particular load case.
4. Click the Import button to start the importer.