Unit 5 and introduction of PromptNum?

csp-unit-5

#1

In Unit 5 Lesson 6 it states:

Blockquote
Up until now, the event-driven apps you have created responded to the user clicking an element or typing a number when you used promptNum . What if we want the user to provide text instead of a number?

However I can not recall any time we have used promptNum during any of the earlier lessons. I may be wrong but if anyone can point me to where promptnum is first introduced that would be appreciated.


#2

Unit 5, Lesson 4, Bubble 15…I had to double-check that myself!