Beep
(Built-in Mathematica Symbol) Beep[] generates an audible beep when evaluated.
ButtonMinHeight is an option for the low-level function ButtonBox that specifies the minimum total height in units of font size that should be allowed for the button.
CapForm
(Built-in Mathematica Symbol) CapForm[type] is a graphics primitive that specifies what type of caps should be used at the ends of lines, tubes, and related primitives.
CurrentImage[] returns the current image captured from a connected camera.CurrentImage[n] returns n sequential image frames as a list.
DiscreteDelta[n_1, n_2, ...] gives the discrete delta function \[Delta] (n_1, n_2, ...), equal to 1 if all the n_i are zero, and 0 otherwise.
DistributionParameterQ[dist] yields True if dist is a valid distribution, and yields False otherwise.
DivisorSum[n, form] represents the sum of form[i] for all i that divide n.DivisorSum[n, form, cond] includes only those divisors for which cond[i] gives True.
Epilog
(Built-in Mathematica Symbol) Epilog is an option for graphics functions that gives a list of graphics primitives to be rendered after the main part of the graphics is rendered.
ExactNumberQ[expr] returns True if expr is an exact real or complex number, and returns False otherwise.
FiniteAbelianGroupCount[n] gives the number of finite Abelian groups of order n.