be to do something
formal
a) used to talk about arrangements for the future
Audrey and Jimmy are to be married in June.
Two men are to appear in court on charges of armed robbery.
b) used to give an order or to tell someone about a rule
You are to wait here in this room until I return.
All staff are to wear uniforms.
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO?
Memorize