History: Tracker Field Types
Preview of version: 17
Tracker Field Types
Tracker Fields info are the columns in a tracker table. (the items are the rows).
See: Adding fields to a tracker.
For definition names values of the fields (in case you need to do some advanced magic with them), please refer to the developer's http://dev.tiki.org/Tracker+Field+Types overview.
Some of the field types have some more documentation including examples, etc:
Error
Unable to retrieve information for structure id "2890"
TrackerFields | Tracker Fields | TrackerField | Tracker Field | Tracker Field Types