bitcoinbook/preface.asciidoc

[preface]
== Preface

=== Conventions Used in This Book

The following typographical conventions are used in this book:

_Italic_:: Indicates new terms, URLs, email addresses, filenames, and file extensions.

+Constant width+:: Used for program listings, as well as within paragraphs to refer to program elements such as variable or function names, databases, data types, environment variables, statements, and keywords.

**`Constant width bold`**:: Shows commands or other text that should be typed literally by the user.

_++Constant width italic++_:: Shows text that should be replaced with user-supplied values or by values determined by context.


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[WARNING]
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This icon indicates a warning or caution.
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=== Using Code Examples
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<remark>PROD: Please reach out to author to find out if they will be uploading code examples to oreilly.com or their own site (e.g., GitHub). If there is no code download, delete this whole section.</remark>
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Supplemental material (code examples, exercises, etc.) is available for download at link:$$http://examples.oreilly.com/<ISBN>-files/$$[].

This book is here to help you get your job done. In general, if example code is offered with this book, you may use it in your programs and documentation. You do not need to contact us for permission unless you’re reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from this book does not require permission. Selling or distributing a CD-ROM of examples from O’Reilly books does require permission. Answering a question by citing this book and quoting example code does not require permission. Incorporating a significant amount of example code from this book into your product’s documentation does require permission.

We appreciate, but do not require, attribution. An attribution usually includes the title, author, publisher, and ISBN. For example: “_Book Title_ by Some Author (O’Reilly). Copyright 2012 Some Copyright Holder, 978-0-596-xxxx-x.”

If you feel your use of code examples falls outside fair use or the permission given above, feel free to contact us at pass:[<email>permissions@oreilly.com</email>].

=== Safari® Books Online

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Technology professionals, software developers, web designers, and business and creative professionals use Safari Books Online as their primary resource for research, problem solving, learning, and certification training.

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=== How to Contact Us

Please address comments and questions concerning this book to the publisher:

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We have a web page for this book, where we list errata, examples, and any additional information. You can access this page at link:$$http://www.oreilly.com/catalog/<catalog page>$$[].

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<remark>Don't forget to update the link above.</remark>
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To comment or ask technical questions about this book, send email to pass:[<email>bookquestions@oreilly.com</email>].

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=== Acknowledgments


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