eintr: On Reading this Text

 
 On Reading this Text
 ====================
 
 All through this document, you will see little sample programs you can
 run inside of Emacs.  If you read this document in Info inside of GNU
 Emacs, you can run the programs as they appear.  (This is easy to do and
 is explained when the examples are presented.)  Alternatively, you can
 read this introduction as a printed book while sitting beside a computer
 running Emacs.  (This is what I like to do; I like printed books.)  If
 you don’t have a running Emacs beside you, you can still read this book,
 but in this case, it is best to treat it as a novel or as a travel guide
 to a country not yet visited: interesting, but not the same as being
 there.
 
    Much of this introduction is dedicated to walkthroughs or guided
 tours of code used in GNU Emacs.  These tours are designed for two
 purposes: first, to give you familiarity with real, working code (code
 you use every day); and, second, to give you familiarity with the way
 Emacs works.  It is interesting to see how a working environment is
 implemented.  Also, I hope that you will pick up the habit of browsing
 through source code.  You can learn from it and mine it for ideas.
 Having GNU Emacs is like having a dragon’s cave of treasures.
 
    In addition to learning about Emacs as an editor and Emacs Lisp as a
 programming language, the examples and guided tours will give you an
 opportunity to get acquainted with Emacs as a Lisp programming
 environment.  GNU Emacs supports programming and provides tools that you
 will want to become comfortable using, such as ‘M-.’ (the key which
 invokes the ‘find-tag’ command).  You will also learn about buffers and
 other objects that are part of the environment.  Learning about these
 features of Emacs is like learning new routes around your home town.
 
    Finally, I hope to convey some of the skills for using Emacs to learn
 aspects of programming that you don’t know.  You can often use Emacs to
 help you understand what puzzles you or to find out how to do something
 new.  This self-reliance is not only a pleasure, but an advantage.