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• Global Variables: | Variable values that exist permanently, everywhere. | |
• Constant Variables: | Certain "variables" have values that never change. | |
• Local Variables: | Variable values that exist only temporarily. | |
• Void Variables: | Symbols that lack values. | |
• Defining Variables: | A definition says a symbol is used as a variable. | |
• Tips for Defining: | How to avoid bad results from quitting within the code to initialize a variable. | |
• Accessing Variables: | Examining values of variables whose names are known only at run time. | |
• Setting Variables: | Storing new values in variables. | |
• Variable Scoping: | How Lisp chooses among local and global values. | |
• Buffer-Local Variables: | Variable values in effect only in one buffer. | |
• Frame-Local Variables: | Variable values in effect only in one frame. | |
• Future Local Variables: | New kinds of local values we might add some day. |