Where to know the implict key, like "Shift+Alt+1"=Heading 1

Operating system

Windows

Joplin version

3.4.12

Desktop version info

Joplin 3.4.12
Client ID: de04fd49c6554414a0d97879d9b53f9c

Editor

Rich Text Editor

What issue do you have?

I found "Shift+Alt+1/2/3 is for Heading1/2/3; Shift+Ctrl+8 is for Bullet List, etc." While I did not find information about these keymap message. Or if these keyboard could show, when my mouse over the button of Heading 1, like "Heading 1(Shift + Alt + 1)"