A project's properties hold all the information to build and run your application, such as:
Build Paths Defines the order in which the directories of files are built, and the order in which locations are searched for copybooks.
Build Settings These include information such as the types of target files to build, the target platform and so on.
BMS Properties The BMS page in the project properties lets you specify build settings for BMS compilations.
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.
File Extensions 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.