ColorConvert[expr, colspace] converts color specifications in expr to refer to the color space represented by colspace.
ControlPlacement is an option for Manipulate, TabView, and other control objects that specifies where controls should be placed.
CurveClosed is an option for JoinedCurve that specifies whether individual curve components should be closed curves.
Dashed
(Built-in Mathematica Symbol) Dashed is a graphics directive specifying that lines that follow should be drawn dashed.
DefaultButton[] represents an OK button that closes a dialog, and is the default when DynamicBox[ToBoxes[If[$OperatingSystem === "MacOSX", "Return", "Enter"], StandardForm], ...
DialogInput[expr] interactively puts up expr as a dialog notebook, waits until a DialogReturn[e] is evaluated from within it, and then returns the result e. DialogInput[{x = ...
DynamicSetting[e] represents an object which displays as e, but is interpreted as the dynamically updated current value of Setting[e] if supplied as Mathematica ...
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.
FrontEndToken["cmd"] is an object which represents a front end command token, typically corresponding to a front end menu item, to be executed by FrontEndExecute. ...
Glaisher is Glaisher's constant with numerical value \[TildeEqual] 1.28243.