Why the Coloring? opens a dialog that explains any syntax coloring in the active notebook.
ControllerInformation[] gives dynamically updated information on currently connected controller devices.
GreaterSlantEqual[x, y, ...] displays as x \[GreaterSlantEqual] y \[GreaterSlantEqual] ....
LessSlantEqual[x, y, ...] displays as x \[LessSlantEqual] y \[LessSlantEqual] ....
MorphologicalBranchPoints[image] gives a version of a binary image image in which white pixels represent the morphological branch points.
RawData
(Built-in Mathematica Symbol) RawData[data] is a low-level representation of the contents of a cell in which Show Cell Expression has been toggled.
$SystemWordLength gives the effective number of bits in raw machine words on the computer system where Mathematica is running.
ExcludePods is an option to WolframAlpha that specifies pod IDs to exclude from the results.
FilePrint["file"] prints out the raw textual contents of file.
FindGeoLocation[] attempts to find the current geodetic location of your computer.