ShowCellLabel is an option for Cell which specifies whether to display the label for a cell.
ShowCellLabel is more often set for styles of cells than for individual cells.
With the setting CellLabelAutoDelete->True, the label for a cell is automatically deleted if the cell is modified.
See The Mathematica Book: Section 2.10.9.
See also: CellLabel, ShowCellTags.
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.
SEE THE DOCUMENTATION CENTER
FOR THE LATEST INFORMATION.