You may find it useful to use one or more rules with an expression several times. Mathematica provides functions that let you iterate when using rules with expressions. In ...
Get
(Built-in Mathematica Symbol) << name reads in a file, evaluating each expression in it, and returning the last one.
NotebookObject[fe, id] is an object that represents an open notebook in the front end.
RadioButton[x, val] represents a radio button whose setting x is set to val when the button is clicked. RadioButton[x, val] is displayed as RadioButtonBox[0, {0}] when x is ...
TetGenGetRegions[expr] returns the regions in a TetGen expression.
SetCoordinates[coordsys] sets the default coordinate system to be coordsys with default variables. SetCoordinates[coordsys[c_1, c_2, c_3]] sets the default coordinate system ...
Option Inspector view and set all option values for cells, notebooks, and global preferences.
CellDingbat is an option for Cell which specifies what dingbat to use to emphasize a cell.
Except
(Built-in Mathematica Symbol) Except[c] is a pattern object which represents any expression except one that matches c. Except[c, p] represents any expression that matches p but not c.
Slider2D[{x, y}] represents a 2D slider with settings x and y in the range 0 to 1. Slider2D[Dynamic[pt]] takes the setting to be the dynamically updated current value of pt, ...