Is there a way to temporarily "mute" or turn off the GM layer

There are frequently a metric crap-tonne* of items on the GM layer that can get in the way of a clear view of what's going on in a combat...  Is there a way to toggle the layer to get the extraneous clutter from the GM layer out of the way?  *the imperial crap-tonne was discontinued due to disinterest.

You can adjust the GM opacity for the layer (all the way down to fully transparent), but AFAIK there’s no way to toggle it off and on with a button. 

Nope, game-level interface controls are not exposed to the API, so it can't even be done with a script. Jarren has the right of it: use the opacity slider. It's under the settings button in the left hand toolbar.

I'm pretty sure I could get you a script to toggle it on and off by setting the transparency. 

The Aaron said: I'm pretty sure I could get you a script to toggle it on and off by setting the transparency.  Is the GM transparency setting exposed to the API? I don't see it listed on the API: Objects wiki , unless I'm missing something.

Hmm. I thought it was, but I'll have to check. If it isn't, I might be able to fix that. =D

I would appreciate such a Mod because I have TOR games with the player's map on the Map layer and the Lore master's map on the GM layer. 

I can't find the property anywhere in the wiki, but that's probably out of date. If it exists, would it be a page() property or campaign() property? 

Ah, you're right, that's a purely UI setting that doesn't appear to get stored.  You can tell because it doesn't persist across refreshes of the browser and it stays on the same setting when you switch pages.

I have a quick and dirty work-around which probably doesn’t work for other folks.  I don’t use Dynamic Lighting at all , so I just select everything on the GM Layer and move it to the Lighting Layer. Voila! I can see the Map & Token Layers unobstructed.  ( 13th Age & The One Ring don’t need Dynamic Lighting) I haven’t scripted it yet, but I suspect MetaScriptToolbox & TokenMod will figure heavily. ;)