The 'Intersect Polylines' task is a custom edit task that creates new polylines much the like 'Create New Features'
task but if the new polyline crosses any features belonging to the same feature class, the new feature and the
existing features, are interesected. For example, in the most simple case, digitizing a new polyline that crosses another
polyline results in 4 features.
How to use:
Register the dll on your machine.
Use Categories to add the dll to the 'ESRI Edit Tasks' component category.
Start an edit session: the new task should appear in the edit task drop down.
Select the 'Create and Intersect' task.
Set the target layer to be a polyline feature layer.
Digizite new polylines with the task. If the edit sketch crosses an existing feature
in the same feature class, both new and original features will be intersected.