The most commonly used Freedombase tag is the %System_Class_Attribute% tag. This tag tells Freedombase to insert the value from the given Attribute, from the given Class, from the given System, into the page at this point. Please note that System means approximately the same as Application or Account; Class means approximately the same as Table; and Attribute means approximately the same Field. In most cases, these tags will contain actual application, table and field names, with any underscores ('_') removed from within the names.

This tree structure, allows Freedombase to easily output data from multiple different tables into the one page, without any confusion as to what data should be output at that point. We say tree structure, as each Application can contain many Tables, and each Table can contain many Fields, allowing this one tag type to output any data in any field from any table in any application.

Generally, object oriented terminology is used within Freedombase, so Table will normally be referred to as Class, and Field will normally be referred to as Attribute.