A project's properties hold all the information to build and run your application, such as:
Defines the order in which the directories of files are built, and the order in which locations are searched for copybooks.
These include information such as the types of target files to build, the target platform and so on.
Build Directives for Standalone Editing
Enables you to specify any Compiler directives to be used when compiling standalone COBOL files when no associated program symbols files (.idy) are found.
You can also associate a file extension with the content type of a COBOL file, using
Window > Preferences > General > Content Types
Run-Time Configuration Properties
These include options such as the search order for called programs, run-time arguments, run-time tunables, COBOL switches and so on.
Configuring the Project, Build Configuration and File Properties
To set file properties using directive scanning
Setting Compiler Directives on Individual Files
Setting Project-Wide Build Properties and Compiler Directives