ChartLabels is an option for charting functions that specifies what labels should be used for chart elements.
ContentSize is an option for Manipulate and other functions that specifies the size of the content area to use.
Enabled
(Built-in Mathematica Symbol) Enabled is an option for objects such as Slider that specifies whether the objects should be enabled for interactive manipulation.
ResetScheduledTask[obj] resets scheduled task object obj to the original parameter values.ResetScheduledTask[obj, timespec] resets scheduled task timing to ...
ButtonBar[{lbl_1 :> act_1, lbl_2 :> act_2, ...}] represents a bar of buttons with labels lbl_i that perform actions act_i when pressed.
Overlay
(Built-in Mathematica Symbol) Overlay[{expr_1, expr_2, ...}] displays as an overlay of all the expr_i.Overlay[{expr_1, expr_2, ...}, {i, j, ...}] displays as an overlay of expr_i, expr_j, ...
PassEventsDown is an option to EventHandler which specifies whether events handled by a particular event handler should be passed down to event handlers nested inside.
A typical Mathematica notebook containing text, graphics, and Mathematica expressions. The brackets on the right indicate the extent of each cell. Mathematica notebooks are ...
CDFDeploy["file.cdf", expr] deploys expr in a form that can be played by Wolfram CDF Player.CDFDeploy["file.cdf", notebook] deploys a notebook.CDFDeploy["file.cdf", ...
PopupWindow[expr, contents] displays as expr, but pops up a window containing contents when clicked.