Virtual keyword can be used in ASP to include a directive to indicate that a path begins with a virtual directory. For example, if a file named MyConstants.inc is in a virtual directory named /MyASPApp, then to insert the contents of MyConstants.inc into the desired line, you can add this line in the beginning of the file:
Alternatively, file keyword is used to indicate a relative path. A relative path begins with the directory that contains the including file.