AutoGeneratedPackage is an option for notebooks that specifies whether a package is automatically created when a notebook that contains initialization cells or groups is ...
CellLabelPositioning is an option for cells that specifies where the label for a cell is positioned.
CounterFunction is an option for counters that specifies the symbols used to display the value of the counter.
DefaultElement is an option for Grid and related constructs which specifies what to insert when a new element is interactively created.
ExponentPosition is an option for RadicalBox that specifies the placement of the index outside a radical sign.
FontTracking is an option for Style and Cell that specifies how condensed or expanded you want the font in which text is rendered to be.
InitializationCellEvaluation is an option for notebooks that specifies whether initialization cells in a notebook are automatically evaluated when the notebook is opened.
InitializationCellWarning is an option for notebooks that specifies whether a warning should be given when a notebook containing initialization cells is opened.
OutputAutoOverwrite is an option for notebooks that specifies whether the output of a command should replace any existing output from a previous evaluation.
Path
(Built-in Mathematica Symbol) Path is an option for Get and related functions which gives a list of directories to search in attempting to find an external file.