OpImportSTL = 1103, // MENU FILE - IMPORT - STL FILE
OpImportCGNS = 1104, // MENU FILE - IMPORT - CGNS FILE
OpImportGMF = 1106, // MENU FILE - IMPORT - GMF FILE
+ OpImportMESHIO = 1107, // MENU FILE - IMPORT - other formats... (meshio)
OpPopupImportDAT = 1120, // POPUP MENU - IMPORT - DAT FILE
OpPopupImportUNV = 1121, // POPUP MENU - IMPORT - UNV FILE
OpPopupImportMED = 1122, // POPUP MENU - IMPORT - MED FILE
OpExportSTL = 1203, // MENU FILE - EXPORT - STL FILE
OpExportCGNS = 1204, // MENU FILE - EXPORT - CGNS FILE
OpExportGMF = 1206, // MENU FILE - EXPORT - GMF FILE
+ OpExportMESHIO = 1207, // MENU FILE - EXPORT - other formats... (meshio)
OpPopupExportDAT = 1210, // POPUP MENU - EXPORT - DAT FILE
OpPopupExportMED = 1211, // POPUP MENU - EXPORT - MED FILE
OpPopupExportUNV = 1212, // POPUP MENU - EXPORT - UNV FILE