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  ANSI Common Lisp   24 System Construction   24.1 System Construction Concepts   24.1.2 Features

24.1.2.1 Feature Expressions

Boolean combinations of features, called feature expressions, are used by the #+ and #- reader macros in order to direct conditional reading of expressions by the Lisp reader.

The rules for interpreting a feature expression are as follows:

24.1.2.1.1  Examples of Feature Expressions


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