Mathematica Tutorial: Notebooks And Documents - Wolfram Research

Notebooks and Documents 7The exception to this rule is when an output contains the formatted results of a Dynamic orManipulate function. Such outputs will reevaluate in the kernel on an as-needed basis longafter the evaluation which initially created them. See "Dynamic Interactivity Language" formore information on this functionality.As you type, Mathematica applies syntax coloring to your input using its knowledge of thestructure of functions. The coloring highlights unmatched brackets and quotes, undefined globalsymbols, local variables in functions and various programming errors. You can ask why Mathematicacolored your input by selecting it and using the Why the Coloring? item in the Helpmenu.If you make a mistake and try to enter input that the Mathematica kernel does not understand,then the front end will produce a beep and emphasize any syntax errors in the input with color.In general, you will get a beep whenever something goes wrong in the front end. You can findout the origin of the beep using the Why the Beep? item in the Help menu.Notebooks as DocumentsMathematica notebooks allow you to create documents that can be viewed interactively onscreen or printed on paper.Particularly in larger notebooks, it is common to have chapters, sections and so on, each representedby groups of cells. The extent of these groups is indicated by a bracket on the right.