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

Code words in text are shown as follows:

"VBoxManage command can also be used."

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

VBoxManage modifyvm "VM name" --natpf1 "Testssh,tcp,1234 ,22"

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "If everything goes fine then the Oracle VM VirtualBox Manager screen appears."