Anti-tangle tag with slot cut out

Another anti-tangle tag, but this one with a slot cut out in case you forgot to put it on the spool before loading into AMS/AMS lite.  Made the slot track such that the filament won't slip out. Labels can be added as well.

I'm not sure how the physics of these prevent tangles, but some filament manufacturers include paper tags with their filaments, so there must be something to them.