Find the name of node that is in the input of another.

OPINPUT is a way to return the name of the node in the input of the current referenced node.

Date Created:Friday December 29th, 2006 03:41 AM
Date Modified:Wednesday July 30th, 2008 02:19 AM

point("../" + opinput(".",0),$PT,P,0)

//you can use opinput in between using "+"
ch("../"+opinput(".",0)+"/initial_tz" )