CellLabelPositioning is an option for cells that specifies where the label for a cell is positioned.
CellTags is an option for Cell that gives a list of tags to associate with a cell.
Copyable is an option for Cell that specifies whether a cell can be copied interactively using the front end.
DigitCharacter represents a digit character 0\[Dash]9 in StringExpression.
FilePrint["file"] prints out the raw textual contents of file.
FractionLine is an option for fractions that specifies the thickness of the line separating the numerator and denominator.
InitializationCellEvaluation is an option for notebooks that specifies whether initialization cells in a notebook are automatically evaluated when the notebook is opened.
LayerSizeFunction is an option for TreePlot that gives a function to specify the relative height to allow for each layer.
LetterCharacter represents a letter character in StringExpression.
LibraryFunctionError[name, code] represents an error returned from a LibraryFunction.