06aed3c1_l__DevGuide_DataModel____XWiki__Description
[Field Type] Computed Pseudofield [Since Version] new in 4.2M3 [Description] 
Allows to create a pseudo field for which the display can be configured using a custom displayer and the value retrieved by using a script. It allows to combine other fields together.
XWiki Data Model (DevGuide.DataModel) - XWiki
Description