We've used a number of styles in the book to help you understand what's going on.
We've used the important words style to flag up new or important subjects.
Screen Text is used to indicate anything you'd see on the screen, including
URLs. New blocks of code are in this code foreground style:
If we're amending a script, perhaps adding in a new line or making changes to an existing one, then we use the code background style for the code that you've already seen together with the foreground style to highlight the new code:
To talk about code within text we use this code in text style, which is also used for file names like MyFirstPHP.php
A Note About Code Formatting
output+="<a href=\""+getPageName(pages[i][j])+".html\" class=\"page\" title=\""+pages[i][j]+"\">";
will look like this in the book:
output+="<a href=\""+getPageName(pages[i][j])+".html\" class=\"page\" title=\""+pages[i] [j]+"\">";
The code in the download is without the whitespace.