LPTHW - Exercise 13 OK then, new stuff here. Turns out I'd heard of this before but they were called libraries. Consequently it took a few minutes to complete the mental abstraction as to what these features/modules as Zed calls then actually are. This is the first bit I've come to and thought "Oh, this is the interesting stuff". I really hope to get through these lessons to the first test and move on to the stuff I've never heard of/encountered.