When should a LAST block be triggered?

[Agent Zhang]

Hello~

S04 says, "A NEXT executes only if the end of the loop block is
reached normally, or an explicit next is executed."

Then how about LAST blocks?

Do they execute only if the last iteration of the loop is reached
normally, or an explicit last is executed?

Will return/leave/goto quietly bypass LAST blocks just like NEXT?

Clarification (especially in the form of S04 updates) will be very
appreciated. Thanks!

Agent