Read the statement by Michael Teeuw here.
MMM-ModuleToggle
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 Description: 
 MMM-ModuleToggle can show or hide specific modules by sending a notification to the module. You can also define to toggle between show and hide and hide module on startup.
 It can be easily combined with MMM-Buttons to hide or show modules with the press of a button.
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 @trekky So… how do you send the notification? 
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 @pepemujica I described it in the readme. With the MMM-Buttons module you can for example send the following notification to hide the calendar and clock module: notification: "MODULE_TOGGLE", payload: {hide: ["calendar", "clock"], show: [], toggle:[]}
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 @trekky Thanks 
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 Great idea! :) 
 If i have multiple instances of a module, for example MMM-WunderGround (for different locations) or as in my case I have 6 MMM-MotionEye modules. :)
 Can I specify what “instans” of that module I want to toggle?
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 I think the class is the same but the “id” is different. I’m using the ID in my MMM-Modulebar. But I’ll have to test it when I have some time. :) 

