How do I add a save button to the shortcut toolbars?

Audacity Help Forum Windows
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How do I add a save button to the shortcut toolbars?

Audacity 2.1.2

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Pressing “Ctrl”+“S” saves as an Audacity project.
“Ctrl”+“Shift”+“E” Exports the audio.
http://manual.audacityteam.org/man/keyboard_shortcut_reference.html