Logging templates must have the filename to write to as the first line. You cannot require an environment setting- if it is not set it will be left blank. Variables will be filled out before being calculated. Configure the HTML All the operations that you want to occur on this iteration are given in hidden form values. For this reason, it is recommended that you specify the browser output last.
All operations are optional.
Operations are denoted with a leading underscore. Defaults to ', '. It really doesn't matter what you put after them, just as long as each operation is unique. Make sure the name of each field corresponds exactly to what you want it to replace in the templates. Something very bad has gone wrong, probably in your installation method.