To export 2D seismic data, select Survey - Export - GeoFrame - 2D. The top part of the user interface corresponds to the OpendTect access, where it is needed to select the Input Line Set and Attribute and the Input Lines that you wish to export (For multiple selection of lines hold the Ctrl key while selecting). See Line Set and Attribute selection dialog for details of selecting the Input Line Set and Attribute.
The bottom part of the user interface corresponds to the GeoFrame access, where it is needed to specify the GeoFrame Project, Password, Survey name, the Output Line Class Name, and select the Output Line Class Template. The Template Line Class must be an existing GeoFrame Line Class from where the exported Line Class can get its set-up from GeoFrame. Note that new lines cannot be created by the export process and that it only possible to create new Line Classes (attributes).