Generally, a cross-reference in Veteran's Affairs (VA) FileMan specifies that some action is performed when the field's value is entered, changed, or deleted. Most cross-references are used for sorting or lookup. These types of cross-references are not part of this research. This page is limited to a closer review of trigger, Mumps, and bulletin cross-references. These types of indices generally involve another field in a file that is possibly outside of the package’s domain or they may simply call another package in their set and kill logic. This page only shows you how to identify the cross-references that involve another application.    (3RBV)