PolarGridLines is an option for sector charts and polar plots that specifies polar grid lines.

Animate[expr, {u, u_min, u_max}] generates an animation of expr in which u varies continuously from u_min to u_max. Animate[expr, {u, u_min, u_max, du}] takes u to vary in ...

IndexGraph[g] replaces the vertices of the graph g by its vertex indexes. IndexGraph[g, r] replaces the vertices with integers r, r + 1, ....

Locator[{x, y}] represents a locator object at position {x, y} in a graphic. Locator[Dynamic[pos]] takes the position to be the dynamically updated current value of pos, with ...

ReverseGraph[g] gives the reverse graph of the directed g.

CurrentImage[] returns the current image captured from a connected camera.CurrentImage[n] returns n sequential image frames as a list.

Toggler[x] represents a toggler button with setting x, that toggles between True and False. Toggler[Dynamic[x]] takes the setting to be the dynamically updated current value ...

RemoveProperty[{obj, item}] removes all properties associated with item in obj.RemoveProperty[{obj, item}, name] removes the property name associated with item in obj.

BollingerBands

ChaikinVolatility