When you save a class definition file in the Editor or manually initiate a syntax check, any syntax errors are highlighted in the Editor using a red circle with an "X" in it during editing, as shown for the CheckCredit( ) method definition that is missing a terminator in an END statement. If you enable the Save R-code option for the project, the class definition file, including its entire class hierarchy is compiled and built in the target r-code directory. The exact location is relative to the project and the class (or interface) type name. You can run a class by using the Run toolbar icon (green circle with triangle).

For more information on class topics, such as creating a new class, Progress Developer Studio for OpenEdge online help.