Keyboard short cut glossary

Hello everyone, is there a glossary for keyboard short cuts ?
I have been looking a way to enter the half diminished symbol on a C chord (as I would just enter for example C^ for major7) but could not locate on my Mac keyboard what key would translate into m7b5 or crossed circle.
Overall a complete short cut guide would be great.
Thank you

Option + o = ø

I think that's the only text symbol the Editor will accept. I've used others in the Text field on occasion, but I can't remember all the commands so I just keep them handy on a document to copy & paste what I need:

♩ ♪ ♫ ♬ ♭ ♮ ♯ › ≻ ＞ ● • ‿ ⁀ ⁔ ➜ © ┏ 3 ┓ ┗ 3 ┛

①②③④⑤⑥⑦⑧⑨⑩ ⓐⓑⓒⓓⓔⓕⓖⓗⓘⓙⓚⓛⓜⓝⓞⓟⓠⓡⓢⓣⓤⓥⓦⓧⓨⓩ

➊➋➌➍➎➏➐➑➒➓ ⒶⒷⒸⒹⒺⒻⒼⒽⒾⒿⓀⓁⓂⓃⓄⓅⓆⓇⓈⓉⓊⓋⓌⓍⓎⓏ

Of course, there are a zillion other "special symbols" that can be typed in the Text field. There's probably a complete list on the Apple site or somewhere else online.

Thank you DaleMac