FileNameDialogSettings -> {opt -> val} is a global option that specifies settings for the Insert File Path dialog box.
FormatTypeAutoConvert is an option for cells that specifies whether the contents of a cell are automatically converted into a different format when the style of that cell is ...
FractionLine is an option for fractions that specifies the thickness of the line separating the numerator and denominator.
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.
GridFrameMargins is an option for grids that specifies the spacing between the content of the grid and the frame surrounding it.
GridFrame is an option for grids that specifies whether a surrounding frame is drawn.
ImportAutoReplacements is an option for cells that specifies which replacement rules Mathematica automatically applies when importing text.
IncludePods is an option for WolframAlpha that determines specific pod IDs to include in the results.
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.