Saves a DDM (.NSD) file implicitly after every change made in the DDM editor. When this preference is disabled, a DDM is saved explicitly with Ctrl+S.

Whether the DDM editor inserts a new field before or after the selected line.

Column sizing in the DDM editor: bestFit sizes the columns according to their content, autoFit stretches them over the width of the editor.

Opens the DDM editor at the cell which contains the hit selected in the Search view, at the cost of a brief editor flicker each time the editor is opened. When this preference is disabled, a search hit selects nothing in the table; see also Search Hits in DDM Sources.