CellDingbat

CellDingbat is an option for Cell which specifies what dingbat to use to emphasize a cell.

The setting CellDingbat->"" displays no dingbat.

Dingbats are placed to the left of the main contents of a cell, aligned with the first line of the contents.

Dingbats are placed outside of any cell frame.

The setting for CellDingbat can be any string. A typical setting is "\[FilledSquare]".

CellDingbat is often set for styles of cells rather than for individual cells.

See The Mathematica Book: Section 2.10.9.

See also: CellFrame, Background.