GridFrame is an option for grids that specifies whether a surrounding frame is drawn.
HeldGroupHe[] represents the sporadic simple Held group He.
ImageAspectRatio[image] gives the ratio of height to width for image.
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.
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 ...
Initialization is an option for Dynamic, DynamicModule, Manipulate, and related constructs that specifies an expression to be evaluated when the construct is first used or ...
InputNamePacket[string] is a MathLink packet that contains in string the name to be assigned to the next input.