Fields can be distinguished between Data Fields that are used to store information like Lastname or Club, and fields that have values calculated from other data like a rank.
All fields can either be shown on lists or certificates directly or be used in expressions. They can easily be selected in the Field Wizard.
Some fields use a Dot Logic, which means that for sets of data which all refer to the same context the same prefix is used and subsequent parameters can then be defined following a period.
For example, Contest may have a variety of parameters relating to the Contest which can be appended such as Contest.Name or Contest.Length.