Text formatting codes for Greek characters and other symbols

[Garth Wilson]

Do you specifically want LaTex? For mixing the Greek letters and other specials in with text, I copy and paste from a browser tab I keep open to my html sandbox file, and I got the characters from various html character pages like
http://www.whatsmyip.org/html-characters/
https://www.wired.com/2010/02/special_characters/
http://www.degraeve.com/reference/specialcharacters.php
https://www.w3.org/TR/REC-html40/sgml/entities.html
or sometimes from the character map I can pull down in my GUI. The html allows doing thing like the overline as well but I don't think we can get that in phpBB. I'd be delighted if someone would prove me wrong. For equations, I've used CodeCogs which someone here got me turned on to. I guess there's the same kind of thing in my LibreOffice Writer too, but I hadn't discovered it yet when I got started using CodeCogs.