xcdb debugger, to debug non-Document framework applications. Before running the debugger in SNiFF+, set up the Project Editor Preferences:
Make command (it should be Makeit).
If you don't want to debug within the SNiFF+ environment, use xcdb. This debugger brings up its own windowing environment in which to debug. Launch xcdb by using the Taligent script TalDB along with the SourcePath option containing the path to your source.
TalDB [-s SourcePath ... ] yourApplicationName