Common Lisp the Language, 2nd Edition

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### 28.1.2.2. Creating Instances of Classes

The generic function `make-instance` creates and returns a new instance of a class. The Object System provides several mechanisms for specifying how a new instance is to be initialized. For example, it is possible to specify the initial values for slots in newly created instances either by giving arguments to `make-instance` or by providing default initial values.

Further initialization activities can be performed by methods written for generic functions that are part of the initialization protocol. The complete initialization protocol is described in section 28.1.9.