What does the TEMPLATE variable mean in the qmake project file?

What does the TEMPLATE variable mean in the qmake project file? What are possible values?

TEMPLATE variable contains the name of the template to use when generating the project. The allowed values are:

# app - Creates a Makefile for building applications (the default).

# lib - Creates a Makefile for building libraries

# subdirs - Creates a Makefile for building targets in subdirectories.

# vcapp - Windows only Creates an application project for Visual Studio.

# vclib - Windows only Creates a library project for Visual Studio