What does mnemonic mean in a sublime text?

Question

What does the Mnemonic attribute mean in sublime text?

Because I found it in some Main.sublime-menu files , and it is written like this:

"mnemonic":  "O" // or any other letter instead of O

It is used many times in sublime text packages, but now I have told myself that it is time to find out what it means and why it is.

Answer 1

From Google , Mnemonic means

a device, such as a pattern of letters, ideas, or associations, that helps you remember something.

and Techopedia :

, , , , .

Sublime ( ) , . , .sublime-menu:

[
    {
        "caption": "File",
        "mnemonic": "F",
        "id": "file",
        "children":
        [
            { "command": "new_file", "caption": "New File", "mnemonic": "N" },

F File , N New File. , Windows Linux Alt F, File, N, New File.