GridFrame is an option for grids that specifies whether a surrounding frame is drawn.
InitializationGroup is an option for the first cell of a cell group that specifies whether the group should be tagged to be evaluated by the Mathematica kernel when the ...
LinkClose[link] closes an open MathLink connection.
LocalizeVariables is an option to Manipulate that determines whether the values of variables associated with controls should be localized.
None
(Built-in Mathematica Symbol) None is a setting used for certain options.
SameTest is an option whose setting gives a pairwise comparison function to determine whether expressions should be considered the same.
ShowSelection is an option to Notebook, Cell, and Style that specifies whether to show the current selection highlighted.
SpanAdjustments is an option for selections that specifies the height and width of spanning characters.
StyleBoxAutoDelete is an option for selections that specifies whether a StyleBox wrapped around them should be automatically removed when the expression is edited.
UnderscriptBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for selections that specifies settings for UnderscriptBox objects.