Bug 213504 [Markers] Problems View no longer supports dragging into the Editor Area
I20071218-0800. You used to be able to drag an error into the Editor Area in order to open the associated file. I commonly use the DnD gesture to open a 'problem' but it appears that this isn't working in the new version...
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerCopyHandler.java
String createMarkerReport(ExtendedMarkersView view, IMarker[] markers) {
		StringBuffer report = new StringBuffer();
		MarkerField[] fields = view.getVisibleFields();
		
		final String NEWLINE = System.getProperty("line.separator"); 
		final char DELIMITER = '\t';
		
		for (int i = 0; i < fields.length; i++) {
			report.append(fields[i].getColumnHeaderText());
			if (i == fields.length - 1) {
				report.append(NEWLINE);
			} else {
				report.append(DELIMITER);
			}
		}
		for (int i = 0; i < markers.length; i++) {
			for (int j = 0; j < fields.length; j++) {
				report.append(fields[j].getValue(MarkerSupportInternalUtilities
						.newMarkerItem(markers[i])));
				if (j == fields.length - 1) {
					report.append(NEWLINE);
				} else {
					report.append(DELIMITER);
				}
			}
		}
		return report.toString();
	}
}