Critical updates for 3a and 3b (please distribute now)

Saleforce's recent update included a couple of changes affecting some steps and screencaps in Lab 3a and 3b. We've just updated the PDFs in place in that same old Google Drive folder linked here for your convenience.

Please distribute now to any students who have prior versions of these labs and still need to complete them. This will prevent confusion and keep things smooth for the students and you (and us).

Thanks!