{TAIL ~ This output} can be utilized to set the variable node processor to use {HEAD ~ different update functions} 
{ TAIL ~ This output } can be utilized to set the variable node processor to use { HEAD ~ different update functions }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD