Displaying List Levels (SD)
The various list displays which can be created using the summation, sort, and find functions, are assigned to list levels and stored in the system. You can return to any previous displays at any time.
When you choose Goto
® List level overview, the system displays all list levels previously determined for a list. Choose one of the list levels. The relevant list compiled is displayed. 
Please note that when you return to a previous list level, you will no longer be able to display succeeding list levels. If you have created four list levels, for instance, and go from the fourth to the second list level, you will no longer be able to return to the third or fourth level as these are deleted from the overview.