Initialization Cell makes a cell auto-evaluate whenever the notebook is opened and the kernel is launched.

Initialization Group makes the cells in a group auto-evaluate whenever the notebook is opened and the kernel is launched.

CellLabelPositioning is an option for cells that specifies where the label for a cell is positioned.

CellProlog is an option to Cell that gives an expression to evaluate before each ordinary evaluation of the contents of the cell.

Copyable is an option for Cell that specifies whether a cell can be copied interactively using the front end.

Deletable is an option for Cell that specifies whether the cell can be deleted interactively using the front end.

ExponentPosition is an option for RadicalBox that specifies the placement of the index outside a radical sign.

GridDefaultElement is an option for the low-level function GridBox that specifies what to insert when a new element is created interactively in a GridBox.

LayerSizeFunction is an option for TreePlot that gives a function to specify the relative height to allow for each layer.

RowAlignments is an option for the low-level function GridBox that specifies how entries in each row should be aligned.