Manipulator[x] represents a manipulator with setting x in the range 0 to 1. Manipulator[Dynamic[x]] takes the setting to be the dynamically updated current value of x, with ...

Min[x_1, x_2, ...] yields the numerically smallest of the x_i. Min[{x_1, x_2, ...}, {y_1, ...}, ...] yields the smallest element of any of the lists.

Mouseover[expr, over] represents an object that displays as over when the mouse pointer is over it, and as expr otherwise.

PadRight[list, n] makes a list of length n by padding list with zeros on the right. PadRight[list, n, x] pads by repeating the element x. PadRight[list, n, {x_1, x_2, ...}] ...

PermutationCycles[perm] gives a disjoint cycle representation of permutation perm.

PositiveDefiniteMatrixQ[m] tests whether m is a positive definite matrix.

SetSharedVariable[s_1, s_2, ...] declares the symbols s_i as shared variables whose values are synchronized among all parallel kernels.

TeXForm[expr] prints as a TeX version of expr.

VectorAngle[u, v] gives the angle between the vectors u and v.

Within a standard interactive session, you can create "subsessions" or dialogs using the Mathematica command Dialog. Dialogs are often useful if you want to interact with ...