Built into Mathematica are a large number of special characters intended for use in mathematical and other notation. "Listing of Named Characters" gives a complete listing. ...
VerifyTestAssumptions is an option to LocationTest and similar functions that controls which assumptions to verify through diagnostic tests.
BoxStyle is an option for three-dimensional graphics functions that specifies how the bounding box should be rendered.
WordSeparators is an option for Read, Find, and related functions that specifies the list of strings to be taken as delimiters for words.
Write
(Built-in Mathematica Symbol) Write[channel, expr_1, expr_2, ...] writes the expressions expr_i in sequence, followed by a newline, to the specified output channel.
Median
(Built-in Mathematica Symbol) Median[list] gives the median of the elements in list. Median[dist] gives the median of the symbolic distribution dist.
PieChart3D[{y_1, y_2, ...}] makes a 3D pie chart with sector angle proportional to y_1, y_2, ....PieChart3D[{..., w_i[y_i, ...], ..., w_j[y_j, ...], ...}] makes a 3D pie ...
CornerFilter[image] computes a measure for the presence of a corner for each pixel in image and returns the result as an intensity image.CornerFilter[image, r] detects ...
Introduction General String Patterns Regular Expressions
IdenticalQ[g, h] yields True if graphs g and h have identical edge lists, even though the associated graphics information need not be the same.