unassign

unassign_term 
-inst {s_instName | d_ctuObj} 
-term s_termName

Removes a term from a net.

`-inst` {s_instName\| d_ctuObj}
	Specifies the name of the instance or the object identifier for the instance.
`-term` s_termName	Specifies the terminal name.

The following example disconnect term QN of the I1 instance from the net.

unassign_term -inst I1 -term QN