13.1 Mutating Variables
13.1.1 Mutating Variables in Memory
13.1.2 Variable Mutation and Aliasing
13.1.3 Mutating Variables versus Mutating Data Fields
13.1.4 Mutating Parameters in Function Calls
13.1.5 Mutating Top-Level Variables within Functions
13.1.6 The Many Roles of Variables
13.2 Mutable Lists