What are these chords

[MrCoconut]

Looks like those major symbols - (triangles) or as I like to think of them: an orthographic view of a pyramid.
Turn into question marks when reposting.
Interesting.

Ooh! I just got Ragman's last post. Took me a while...

[ragman1]

Turn into question marks when reposting.

You have to refresh the code every time when editing, it won't re-post the symbol.

[MrCoconut]

I liked your first post before you changed it.
It was an excellent explanation. And yes the triangle is not in this site's code so it defaults to a question mark.
So it must be typed in each time you use it. No copy and paste for the △
Is that accurate?
Thanks!

[ragman1]

Sorry, I changed it because I thought I was being long-winded. Yes, that's accurate.

But, as I said before, it's probably far easier to type M7 than go through all this palaver with symbols. It's more important that people understand the symbols on lead sheets rather than using them here. And there aren't that many to understand anyway.

The most used ones are

Triangle (△) = Maj7. Also Fm/△ = Fm/Maj7.
cut circle (ø) = m7b5
minus (-) = minor (F-7 = Fm7)
plus (+) = sharp 5 (F+ = Faug and F7+ = F7#5)