What is the purpose of the extra long slot on some toasters?

SMEG 4-Slice Long-Slot Toaster long slot toaster canada Shop online or in-store for Bella 4 Slice Long Slot Toaster- Teal In Stock CAD$$ CLEARANCE long slot 2 slice toaster Canada, France, Germany, Global For maximum versatility, consider a long-slot toaster like the Smeg 4-Slice Toaster

long slot toasters 4 slice On my 3rd cheap toaster and I've had it For context Im in Canada otherwise I'd buy the dualit long slot but it's not available here