Timing
(Built-in Mathematica Symbol) Timing[expr] evaluates expr, and returns a list of the time in seconds used, together with the result obtained.
Trigger
(Built-in Mathematica Symbol) Trigger[Dynamic[u]] represents a trigger that can be pressed to make the dynamically updated value of u be continually increased with time from 0 to 1. Trigger[Dynamic[u], ...
TrigToExp[expr] converts trigonometric functions in expr to exponentials.
UpperCaseQ[string] yields True if all the characters in the string are uppercase letters, and yields False otherwise.
VertexLabeling is an option for GraphPlot and related functions which specifies whether labeling should be included by default for vertices in graphs.
$Assumptions is the default setting for the Assumptions option used in such functions as Simplify, Refine, and Integrate.
$CharacterEncoding specifies the default raw character encoding to use for input and output functions.
$MachinePrecision gives the number of decimal digits of precision used for machine-precision numbers.
$MinPrecision gives the minimum number of digits of precision to be allowed in arbitrary-precision numbers.
CUDAArgMaxList[list] gives the index of the maximum element in list.