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: "Methods that have existed in related earlier systems and are still used in Aliro are in the abstract class aliroDBGeneralRow."

A block of code is set as follows:

function setQuery( $sql, $cached=false, $prefix='# ' )
{
$this->_sql = $this->replacePrefix($sql, $prefix);
$this->_cached = $cached;
}

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: "Note that the character strings for role, action, and subject_type are given generous lengths of 60, which should be more than adequate."