f0728e62_nge_Specification_Version_1_02__Description
[Functions] Exists [Number of input parameters] 1 [Syntax] Exists(prefix:) [Description] 
returns True/False based on the pre-binding value of the instance document fact for the current context. Will return True when the Fact value is nil only if the Nilable attribute is set true
FFIEC Call Report Modernization Project - CDR Interchange Specification Version 1.02
Description