I guess I appreciate the effort, but I'm in a library with no headphones so videos aren't going to cut it   Let me know if there's a succinct-textual answer somewhere.  FWIW, I can try to watch videos later on at home.

Here's a slightly off-topic rant: do you guys ever get annoyed when you're looking for some simple answer to a question and the only thing you can find are videos that you know are going to have a rambly introduction and no way to search on the page for exactly what you're looking for (because it isn't a page!) etc?  Ok, end of my rant!