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StructuredSelection

FilledSmallSquare StructuredSelection is an option for cells that determines whether to allow only complete subexpressions be selected interactively in a typeset cell.

FilledSmallSquare StructuredSelection is more often set at a global level than at the level of individual cells. It applies only to typeset, i.e., BoxData cells.

FilledSmallSquare With the setting StructuredSelection Rule True, you can only select a complete subexpression in a typeset cell. If you try to extend the selection by pressing ShiftKeyLeftModified ShortRightArrowRightModified, for instance, the selection changes in discrete jumps, moving directly to the next higher subexpression.

FilledSmallSquare With the default setting StructuredSelectionRule False, if you extend the selection by pressing ShiftKeyLeftModified ShortRightArrowRightModified, the selection advances by a single character.

FilledSmallSquare See The Mathematica Book: Section 2.11.11.

FilledSmallSquare See also: Selectable, DragAndDrop.