what is the use & to highlight the next letter setting

[mikeyb2001]

question in title

[Hadden89]

@mikeyb2001 Which highlight do you mean? Because the option is in the address bar, in quick commands, as keyboard shortcut, in mail settings and even in the context menu

[mikeyb2001]

@Hadden89 its under bookmarks

[iAN CooG]

It's a standard way to associate a keyboard shortcut to the menu entry, the letter after the & will be underlined and will become the keyboard shortcut, e.g. &Save, press S to select the menu entry to Save.