ColumnWidths is an option for the low-level function GridBox which specifies the widths to use for columns.
Control
(Built-in Mathematica Symbol) Control[{u, dom}] represents an interactive control for the variable u in the domain dom, with the type of control chosen to be appropriate for the domain ...
Defer
(Built-in Mathematica Symbol) Defer[expr] yields an object that displays as the unevaluated form of expr, but that is evaluated if it is explicitly given as Mathematica input.
DistanceTransform[image] gives the distance transform of image, in which the value of each pixel is replaced by its distance to the nearest background ...
EvaluationNotebook[] gives the notebook in which this function is being evaluated.
FontProperties -> {opt_1 -> val_1, opt_2 -> val_2} specifies font properties.
FractionBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for cells that specifies settings for FractionBox objects within the cell.
GainMargins[sys] gives the gain margins of the linear time-invariant system sys.
HelpBrowserSettings -> {opt_1 -> val_1, opt_2 -> val_2, ...} is a global option that specifies settings for the legacy Help Browser.
ImageCapture[] opens a graphical user interface for capturing images from connected cameras.