How to disable strange setting

I recently received a .vmf from a friend, and my settings are changed.
Is there anyway to avoid this in the future; also how do I go about disabling this setting in particular.
The setting makes a wire frame around the brush when selected.

**I would greatly appreciate the help.

Thank You
**

disable your 3d grid, its by the grid button

Press P

Thank very much, everything is fixed now.