-moz-inline-box vs -moz-inline-stack

Question

What's the difference between Firefox's -moz-inline-box and -moz-inline-stack proprietary display values?

Answer 1

https://developer.mozilla.org/en/CSS/display

-moz-inline-box ~ (no detail given)

-moz-inline-stack ~ Child elements, including inline-block, block, and -moz-inline-stack are laid out atop one another.