Feature Req: Single button to clear all layers from all zoom levels

[yallu]

I didn't find one so... I'd like to see a button on Map tab that would clear all selections from all zoom levels (airports, navaids, airspace, user wps). Currently I have to go clear them manually from each zoom level. The way I use Plan-G is I just enable whatever minimum layers I need and the defaults are generally too much causing constant script warnings. Just a little helper tool, any chance? :)

[tim arnot]

There's a reset button that puts them all back to the default, but that won't permanentlt clear them. There's also an overlays toggle that turns everything off, but that doesn't affect the settings as such. I'm open to suggestions for a better way of handling overlays in v3...