Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: " Various options and commands can be checked by using the geth --help command."

A block of code is set as follows:

difficulty = difficulty_1_target/current_target
difficulty_1_target = 0x00000000FFFF0000000000000000000000000000000000000000000000000000

Any command-line input or output is written as follows:

COMMANDS:
 list Print summary of existing accounts
 new Create a new account
 update Update an existing account
 import Import a private key into a new account

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."