Config
In this section:
The Config options specify the path and name of the linker configuration file and define symbols for the configuration file.

Linker configuration file
A default linker configuration file is selected automatically based on your project settings. To override the default file, select Override default and specify an alternative file.
The argument variables $TOOLKIT_DIR$ or $PROJ_DIR$ can be used for specifying a project-specific or predefined configuration file.