Reset Pan/Zoom resets the pan and zoom for the selected 3D graphic.

ResetDirectory[] resets the current working directory to its previous value.

ButtonNotebook[] gives the notebook, if any, that contains the button which initiated the current evaluation.

PasteButton[expr] represents a button that pastes expr whenever it is pressed. PasteButton[label, expr] displays with label on the button.

RadioButtonBar[x, {val_1, val_2, ...}] represents a radio button bar with setting x and with labeled radio buttons for values val_i.RadioButtonBar[Dynamic[x], {val_1, val_2, ...

ButtonBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for cells that specifies settings for buttons within the cell.

Manipulate[expr, {u, u_min, u_max}] generates a version of expr with controls added to allow interactive manipulation of the value of u. Manipulate[expr, {u, u_min, u_max, ...

Widget["RadioButton"] represents a radio button.

ButtonBar[{lbl_1 :> act_1, lbl_2 :> act_2, ...}] represents a bar of buttons with labels lbl_i that perform actions act_i when pressed.

For many applications, high-level constructs like Manipulate and TabView will immediately give you the dynamic interactivity you need. Mathematica also allows you to create ...