Exercise 18.1 mentions "UML" when UML is not mentioned elsewhere in the book or chapter

[mcmwebsol]

Exercise 18.1
Has "...For the following program, draw a UML class diagram that shows these classes and ..."
the relationships among them.". But UML is not mentioned elsewhere in the book or chapter. Perhaps that could be reworded to
"...For the following program, draw a class diagram that shows these classes and ..."

[AllenDowney]

Yes, good idea -- thanks!