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.
InputAssumptions is an option for WolframAlpha that specifies assumptions for current query input.
LinebreakAdjustments is an option for selections that sets parameters used for calculating where automatic line breaks should be inserted.
PhaseMargins[sys] gives the phase margins of a linear time-invariant system sys.
PrivateEvaluationOptions -> {opt_1 -> val_1, opt_2 -> val_2} is an option for selections that specifies settings for evaluation-related suboptions.