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        1. MEGS_Log version 3.3 Help

          1. Copyright notice and licence agreement

          2. How to contact MEGS_Log support

          3. What's new in MEGS_Log 3.3

          4. Concepts in MEGS_Log

          5. How to carry out common tasks within MEGS_Log

          6. Menus and commands

          7. Window elements and dialogs

            1. Title bar

            2. The toolbar

            3. Context Help command

            4. Toolbar docking area

            5. Borehole fields

            6. Trace fields

            7. Scrollbars

            8. Ruler

            9. Status bar

            10. About MEGS_Log dialog box

            11. Bitmap Editor dialog box

            12. Calculate Trace Average Value dialog box

            13. Colour dialog box

            14. Correlate dialog box

            15. Error list dialog box

            16. Field Definition dialog box

            17. Font dialog box

            18. Import Schema dialog box

            19. Hatch List Editor dialog box

            20. Licence Information dialog box

            21. Enter Licence Key dialog box

            22. Open Borehole dialog box

            23. Open Trace dialog box

            24. Options dialog box

              1. Options dialog box (View tab)

              2. Options dialog box (Project tab)

              3. Options dialog box (Settings tab)

              4. Options dialog box (Prolog settings tab)

              5. Options dialog box (Prolog 4 settings tab)

              6. Options dialog box (CSV options tab)

              7. Options dialog box (Fonts tab)

            25. Page Setup dialog box

            26. Paste Special dialog box

            27. Print dialog box

            28. Print Progress dialog box

            29. Print Setup dialog box

            30. Relabel Sample Numbers dialog box

            31. Sample Number dialog box

            32. Save Borehole dialog box

            33. Save Changes dialog box

            34. Schema Editor dialog box

            35. Seams and Plies Editor dialog box

            36. Select Borehole Field dialog box

            37. Select Schema dialog box

            38. Set Depth dialog box

            39. Set Display Top Depth dialog box

            40. Set Rock Type dialog box

            41. Select Scale dialog box

            42. Shift Trace dialog box

            43. Trace Defaults Editor dialog box

            44. Trace Manager

            45. Unit Properties dialog box

            46. Vector Editor dialog box

            47. Print preview toolbar

          8. List of appendices

          9. MEGS_Log version 3.3 Help Index

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Options dialog box (Prolog 4 settings tab)

Use this tab of the Options dialog box to change settings relating to the opening and saving of borehole files in Prolog 4.0 and Prolog 4.1 format. This tab on its own may also be shown when opening a specific Prolog 4.x file.

Options dialog box, Prolog 4 settings tab

Settings available are:

When this tab is being shown as part of opening a specific Prolog file the dialog may also contain a message with more information about the number of fields in the borehole and the number of fields in the currently selected schema. You can use the information in this message to help you choose the best settings to open or save the file.

About deducing Prolog 4 schemas

Schemas are deduced using the following protocol: