The OpenEdge Debugger perspective

In its default state, the Debug perspective partitions the Workbench into four functional areas:

Note: An Eclipse preference setting lets you control whether every call to an external procedure or include file opens a new ABL Editor window to display the file, or whether all called files use the same window. Select Window > Preferences > Run/Debug and check or clear the Reuse editor when displaying source code option according to your preference. If you check this option, no more than two ABL Editor windows will open automatically during a debugging session -- one window for the initial file, and a second for all called files.