On the internet most computers are given names which can be used to access them over the internet. These names are called domain names. In Summary the domain name is considered to be the right most two or three segments of the name. Summary decides when to use two and when to use three segments in an attempt to match the domain to a company or organization, more segments might typically refer to a single computer, fewer to a country. Download - A request for a file that is stored or decoded into a file in the users file system, as opposed to being displayed on the screen as part of a web page.
Summary uses the file name extension to determine if a request is a download.
The set of extensions used to make this determination can be configured. Error - A request which resulted in an error code being sent to the browser. Any result code 400 or higher is treated as an error. The last non-graphic requested as part of a visit. File Type - The file name extension is taken to indicate the file type in Summary.