AWOL:
Instead of saying "write a sketch" they could have said "add functions to the system-created main() to make the program complete. Same thing and more accurate.
...but longer.
Excuse me, but I have to embark in my hydrocarbon-fuelled road vehicle and guide it to my place of domicile.
Longer? A few more words? Another sentence - maybe two? Yea, technically it's longer. IMHO it's way better to call it what it is if it merely takes a few more words or a couple of sentences. I'm just freaky-weird like that. 