cl: Usage

 
 1.1 Usage
 =========
 
 This package is distributed with Emacs, so there is no need to install
 any additional files in order to start using it.  Lisp code that uses
 features from this package should simply include at the beginning:
 
      (require 'cl-lib)
 
 You may wish to add such a statement to your init file, if you make
 frequent use of features from this package.
 
    Code that only uses macros from this package can enclose the above in
 ‘eval-when-compile’.  Internally, this library is divided into several
 files, SeeOrganization.  Your code should only ever load the main
 ‘cl-lib’ file, which will load the others as needed.