All files that define gazebo model path

I am with a problem that was to be easy to solve, nevertheless it is requiting considering time. My problem is: Where exactly gazebo declares the model path variable. I found the same question and a good answer [here](https://robotics.stackexchange.com/questions/1170/where-does-gazebo-set-the-gazebo-model-path-environment-variable/10985). But, for my case, it not explain all the model paths that are showed by Gazebo in its Insert window when it is ran in my computer. I just can not explain the origin of the last path that appears, which has the address: **/home/nut/model_editor_models**. I will be glad for any help. Ps.: I using tha gazebo 7.0.