Sign stimulates symbol but references meaning.
Multiply stimulates total but references constituent.

If writing: then meaning targets symbol to find'writing' target variables.
If aggregate: then constituent targets total to find'aggregate' target variables.

q1e stimulates q1o but references q1s.
q1e stimulates q1o but references q1s.

If q1n: then q1s targets q1o to find 'q1n' target variables.
If q1n: then q1s targets q1o to find 'q1n' target variables.