What is a JuMP VariableRef?
DRAFT: A JuMP variable is a reference to an index in a model. It's a thin wrapper around MOI.VariableIndex. Variables have (1) names, and (2) attributes. Describe the different scopes of a variable (e.g., as Julia variables, lookup by string name, and lookup by symbol).
DRAFT: Describe the complete syntax of the
@variable macro. Anonymous versus named variables. Describe the three possible container types returned and how to use them (
How to delete variables.