SectorOrigin is an option to PieChart and related functions that specifies where sectors should start.
SelfLoopStyle is an option for GraphPlot and related functions that specifies how to draw self-loops that connect a vertex to itself.
SimilarityRules is an option for functions such as SequenceAlignment that gives a list of rules for similarity scores to assume between pairs of elements.
StatusArea[expr, string] displays string in the status area of the current notebook when the mouse pointer is in the region where expr appears.
VectorPoints is an option to VectorPlot, ListVectorPlot, and related functions that determines how many field vectors to draw.
VertexLabelStyle is an option and property for Graph and related functions that specifies the style to use for vertex labels.
ViewCenter is an option for Graphics3D and related functions which gives the scaled coordinates of the point which should appear at the center of the final image.
$MinMachineNumber is the smallest positive machine-precision number that can be used on a particular computer system.
$ProcessorCount gives the number of processor cores available on the computer system on which Mathematica is being run.
Other tutorials have discussed explicit loading of Mathematica packages using <<package and Needs[package]. Sometimes, however, you may want to set Mathematica up so that it ...