Conventions used
There are several text conventions used throughout this book.
Code in text: Indicates code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Unlike IPv4, IPv6 is a 128-bit address size of 8 hextets with 16 bits each, divided by a colon for simplicity of interpretation (for example, 2001:0DB8:85A3:0000:0000:8A2E:0370:7334).”
A block of code is set as follows:
html, body, #map {
height: 100%;
margin: 0;
padding: 0
}
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
[default] exten => s,1,Dial(Zap/1|30) exten => s,2,Voicemail(u100) exten => s,102,Voicemail(b100) exten => i,1,Voicemail(s0)
Any command-line input or output is written as follows:
$ mkdir css $ cd css
Bold: Indicates a new term, an important word, or words you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Take the time to read the license terms. When done, select the I accept the license terms checkbox and click Next.”
Tips or important notes
Appear like this.