Interleaving is an option for Image and related functions that specifies whether data corresponding to different channels in an object such as an image should be interleaved.
Khinchin is Khinchin's constant, with numerical value \[TildeEqual] 2.68545.
Legended[expr, lbl] indicates that a legend entry for expr should be created, with label lbl.
LightingAngle is an option for ReliefPlot and related functions that specifies the angle from which simulated illumination is taken to come.
LinkObject["name", n_1, n_2] is an object that represents an active MathLink connection for functions such as LinkRead and LinkWrite.
LocatorAutoCreate is an option for LocatorPane, Manipulate, and related functions that specifies whether new locators should be created when clicking away from existing ...
MessageList[n] is a global object assigned to be a list of the names of messages generated during the processing of the n\[Null]^th input line.
NumberMarks is an option for InputForm and related functions that specifies whether ` marks should be included in the printed forms of approximate numbers.
NumberSigns is an option for NumberForm and related functions which gives strings to use as signs for negative and positive numbers.
PackingMethod is an option for GraphPlot and related functions which specifies how disconnected components should be packed together in the layout produced.