Sequence diagrams have wrong labels which results in confusion as to whether the lifelines belong to a class or an object. MedicineManager and Medicine Classes should have the label "<<Class>>" on top of it, while objects should have ":" colons to the left of it.

Sequence diagrams have wrong labels which results in confusion as to whether the lifelines belong to a class or an object. MedicineManager and Medicine Classes should have the label "<<Class>>" on top of it, while objects should have ":" colons to the left of it.