*CON*

*CON* is just the reverse index of *EFFECTS*. For each constraint, it lists the originating node. The information recorded will be equivalent to *EFF-DEPS*, except that the constraints will not be made opposite:

*CON*

(CLAUSE-28 (NC (SENTENCE)))
((RELATION-20 0 0) (RELATION-20 1 0))

(%DEATH-1 (C (OMIT AGENT)))
((RELATION-20 0 0))

(%DEATH-1 (C (FORM GERUND)))
((RELATION-20 0 0))

(%DEATH-1 (C (FORM NOMINALIZE)))
((RELATION-20 1 0))

*CON* is used whenever the originating node of a constraint is needed.