MAC没自带，需要自己配置

1.搜索自动操作

2.点击快速操作

第一遍可能打不开，可以尝试两次

3.搜索并运行AppleScript

4.输入代码，并选择只应用于Microsoft PowerPoint for Mac【右上角】

支持command+Z撤销删除

on run {input, parameters}
	tell application "Microsoft PowerPoint" -- version: 2019
		set allSlides to slides of active presentation
		set counter to 0
		repeat with each_slide in allSlides
			try
				set content of text range of text frame of place holder 2 of notes page of each_slide to ""
			on error
				set counter to counter + 1
			end try
		end repeat
		if counter > 0 then display dialog "共跳过" & counter & "个无法解析的ppt页" buttons {"OK"} default button 1 with title "清除当前演示文稿中的所有备注" with icon note
	end tell
	return input
end run

5. CRTL+S保存为“清除当前文稿中的所有备注”，PPT中应用。

参考:

https://www.machunjie.com/macos/1315.html【代码运行完闪退】
https://www.zhihu.com/question/35590265/answer/1193997870【完美解决问题】