Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "As you can see, /dev/disk2s6 and /dev/disk2s1 were added. This creates two partitions on disk2 -- most SD cards will only have one, but however many there are mounted, you need to unmount them with diskutil."

A block of code is set as follows:

@app.route('/update_pin', methods=['POST'])
def update_pin():
        #Read in form entry. Since they are all buttons, you should only get

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

$ sudo diskutil eject /dev/rdisk2

Disk /dev/rdisk2 ejected

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Just click on Download ZIP from a browser, and it will automatically begin."

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.