If the value of this variable is true, in-package will work as it was specified to in CLtL-1 rather than as it is specified in ANSI. That is, it will evaluate its required argument, it will accept the nicknames and use keyword arguments, and it will create a package if its required argument does not denote an already defined package. (ANSI calls for cl:defpackage to do what was done by in-package in CLtL-1.)
We provide this variable to allow you to use existing source files
which depend on CLtL-1 in-package behavior but we
recommend that you modify the files to use ANSI behavior as soon as
possible. The initial value of this variable is nil.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.