What are the keymappings for the LibreOffice AutoCorrect “Accept with”?

LibreOffice has a pretty limited method of assigning the key to accept autocorrections, I know what three of the five options are, but have no idea what the other two options represent.

To get to the keymappings in question, follow this process:

LibreOffice Writer
    "Tools" menu
        "AutoCorrect Options..." submenu option
            "Word Completion" tab
                "Accept With" drop-down options:

↘ - ? ________ ?
↩ - enter/return
‿ - space bar
➞ - ? ________ ?
⇥ - tab

What keys do the southeast arrow (:arrow_lower_right:) and the rightwards arrow (➞) represent?

:arrow_lower_right: - End key

- Right arrow

➞ - Right arrow - slaps forehead “Duh”
:arrow_lower_right: - End key - I’m on a MacBook, which doesn’t have an End key, so I would have NEVER figured this one out!
Thank you!

It is being said that some of these combinations will work as End key on MacBook:
Fn + Right arrow, Command + Fn + Right arrow, Command + Right arrow.

also note that those key-names actually come from the operating system - so e.g. on linux you won’t see the graphical symbols, but the words for it. Mac OSX provides them as symbols