These operations include identifying a source data structure and a source attribute associated with {TAIL ~ the source data structure} and identifying {HEAD ~ a destination data structure} and a destination attribute associated with the destination data structure 
These operations include identifying a source data structure and a source attribute associated with { TAIL ~ the source data structure } and identifying { HEAD ~ a destination data structure } and a destination attribute associated with the destination data structure
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH