The Selected Fields screen shows the fields that you selected in the previous screen. It also shows you which of those fields come with complex Search Help lookups.
This screen gives you the chance to change the name of any field in this list. To change the name of a field, double-click on the field and then type in the new name. Hit the <Enter> key to save your change. Click on the Next button once you have finished.

Two of SAP’s work order fields come across with strange names attached to them which most people change. The first field is the "in process" checkbox. This refers to work orders that have been released and have their job cards printed if required (see the SAP menu path Order/Functions/Put in Process in transaction IW32 or use the shortcut <Cntl+F2> whilst in that transaction). The second SAP field is the work order type which comes through as "Sales document type".