AbortKernels[] aborts evaluations running in all parallel subkernels.
Algebraics represents the domain of algebraic numbers, as in x \[Element] Algebraics.
GraphIntersection[g_1, g_2] gives the graph intersection of the graphs g_1 and g_2.GraphIntersection[g_1, g_2, ...] gives the graph intersection of g_1, g_2, ....
Magnification is an option for Style and Cell that specifies what magnification to use for display.
OrderedQ[h[e_1, e_2, ...]] gives True if the e_i are in canonical order, and False otherwise.
ParallelNeeds["context"] evaluates Needs["context"] on all available parallel kernels.
VectorColorFunction is an option for VectorPlot and related functions which specifies a function to apply to determine colors of field vectors drawn.
DateDifference[date_1, date_2] gives the number of days from date_1 to date_2.DateDifference[date_1, date_2, " unit"] gives the difference between date_1 and date_2 in the ...
ExactNumberQ[expr] returns True if expr is an exact real or complex number, and returns False otherwise.
GraphStyle is an option to Graph and related objects that specifies styles to use for the different graph elements.