BarOrigin is an option to BarChart and related functions that specifies the origin placement for bars.
BarSpacing is an option to BarChart and related functions that controls the spacing between bars and groups of bars.
Baseline is a symbol that represents the baseline for purposes of alignment and positioning.
BaselinePosition is an option that specifies where the baseline of an object is considered to be for purposes of alignment with surrounding text or other expressions.
BaseStyle is an option for formatting and related constructs that specifies the base style to use for them.
BatesDistribution[n] represents the distribution of a mean of n random variables uniformly distributed from 0 to 1.BatesDistribution[n, {min, max}] represents the ...
BeckmannDistribution[\[Mu]_1, \[Mu]_2, \[Sigma]_1, \[Sigma]_2] represents the Beckmann distribution with means \[Mu]_1 and \[Mu]_2 and standard deviations \[Sigma]_1 and ...
BeginDialogPacket[integer] is a MathLink packet that indicates the start of the Dialog subsession referenced by integer.
Begin
(Built-in Mathematica Symbol) Begin["context`"] resets the current context.
BeginPackage["context`"] makes context` and System` the only active contexts. BeginPackage["context`", {"need_1`", "need_2`", ...}] calls Needs on the need_i.