[segmondy]

yup, A interacts with B with the interaction originating from A.

[chrisweekly]

related tangent (outside of diagrams) lt < and gt > symbols are often dangerously ambiguous; does

    A > B > C  

mean "A then B then C"? or "A is superior to B which is superior to C"?

[zabzonk]

Which (I think) is why we prefer to use "A --> B" rather than "A>B" or "A > B"