A Rule is a set of if-then instructions that you create to specify how File Juggler should process your files.
When a file has been created or changed, File Juggler will examine if it matches the conditions you have set up in the rule.
Conditions are used to specify which files a rule should process.
If the file matches your conditions File Juggler will perform the actions you have specified in the rule.
Variables are pieces of information that is read from files. These can be examined in conditions and used in actions.