I had my suspicions confirmed just now: my cat has the ability to put my MBA to sleep just by being in a certain location.
The pet door fitted to the outside laundry door has a magnetic catch activated by a small round magnet that dangles from the cat's collar.
If this magnet comes close to the enter/return key on the right hand side of the keyboard whist said beastie is being friendly, then the Mac enters sleep mode.
As this Mac laptop lacks an actual latch, I'm assuming there are corresponding magnets in the lid of the thing otherwise I can't imagine how closing it triggers sleep mode.

I believe so. I've had much trouble sleeping because of gastric reflux but now it's nearly time to consider breakfast.

I gave tne ram a shove will be the name of my next Divinyls tribute band.

And I have tickled a .plist file on the two MacBook Pros so they can work with the Apple USB SuperDrive. When first released, it was intended for use with the MacBook Air. It was later that Mac Minis, iMacs, MBPs & MacBooks came along sans optical drives.

// @kdfrawg

I'm unlikely to get into difficulties re regional coding because I have two MacBook Pros, a G4 PowerBook, G4 PowerMac, G4 eMac & a G5 PowerMac that all have DVD drives plus there's the Sony & Apple external USB burners & the big FireWire/USB external 5.25-in enclosure that has a G5 PowerMac's SuperDrive installed. And the G4 PowerMac has a Combo drive in its second optical drive bay.
I haz lotz of options!

// @kdfrawg

@kdfrawg In amongst my collection of stuff is a USB 2.0 Sony tray-loading DL DVD burner that's about the same size as the Apple device. The Sony also requires a 5 volt external power source but if you have a spare USB port, that will suffice.
Reading up on the internet, it's possible that replacing the Mac's internal drive with another brand can help re regional coding. The built-in Apple ones don't accept firmware updates, apparently.
It's a dark art.

//

I think MacTheRipper is supposed to work in conjunction with VLC's regional decoders to make a "work-anywhere" rip.

They hide in the swamps & tundra………

//

Being a uni-lingualist, I rarely encounter other-regional DVDs, US content is no good as we are civilised here & use the PAL protocol for TV, unlike the US which uses NTSC, which probably doesn't mean Never Twice Same Color, however much I'd like that meaning to apply. When I encounter such a DVD I use VLC player to view it.

Gracenotes database was ever-so-slighty out of date re the CD I've just imported into iTunes: the artist name was recognised as Siroco, instead of Sirocco. I have updated Gracenotes & am now uploading the album to Apple Music.