What is the purpose of exterior corner trim in home construction and how is it installed to enhance the aesthetics and durability of a building's exterior?

Exterior corner trim in home construction serves to protect the edges of a building from damage and provide a finished look. It is installed by attaching it to the corners of the building using nails or screws. This enhances the aesthetics by creating clean lines and adds durability by preventing water infiltration and wear and tear at the corners.