@List not being recognized in Formula

Just wondering if @List was removed from forms and if anyone else has had this problem. I used Field Field0 := @List(Field1,Field2)

and the formula script box comes back telling me @List is unknown in formula on form, however I am able to use it on a computed field in an xpage. I can’t locate any information in the help section other then what it does.

Subject: @List has never existed in the Notes formula language

It may be something unique to xpages

Subject: What are you trying to accomplish? - Maybe this will help:

Field Field0 := Field1 :Field2;