The UDI Wizard logs information to a log file, which helps troubleshoot issues found in the field. It is a good idea for your pages to log information. You can obtain a pointer to this interface from within your page using the page’s Logger() method. Lines in the log file contain a “level” number that represents error, normal, verbose, or debug messages.
Note Debug messages are not saved to the log file unless debug support is turned on. You can turn on debug support by adding the following line to the Style element in the .config file: