Setter[x, val] represents a setter button whose setting x is set to val when the button is clicked. The button is labeled with val, and appears pressed if the value of x is ...

Spacings is an option to Grid and related constructs that specifies the spacings to leave between successive objects.

Sphere[{x, y, z}, r] represents a sphere of radius r centered at (x, y, z). Sphere[{x, y, z}] represents a sphere of radius 1. Sphere[{{x_1, y_1, z_1}, {x_2, y_2, z_2}, ...}, ...

Split[list] splits list into sublists consisting of runs of identical elements. Split[list, test] treats pairs of adjacent elements as identical whenever applying the ...

Sqrt[z] or Sqrt[z] gives the square root of z.

TautologyQ[bf] gives True if all combinations of values of variables make the Boolean function bf yield True.TautologyQ[expr, {a_1, a_2, ...}] gives True if all combinations ...

Toggler[x] represents a toggler button with setting x, that toggles between True and False. Toggler[Dynamic[x]] takes the setting to be the dynamically updated current value ...

Functions like Read and Write handle ordinary printable text. But in dealing with external data files or devices it is sometimes necessary to go to a lower level, and work ...

NLimit[expr, z -> z_0] numerically finds the limiting value of expr as z approaches z_0.

BrownForsytheTest[data] tests whether the variance of data is 1. BrownForsytheTest[{data_1, data_2}] tests whether the variances of data_1 and data_2 are ...