Bug 82231 [build path] Hard to find type restriction compiler problem preferences
I20050104-1600 There compiler preference page contains a Warning/Error node with many sub-entries . I tried to find where I could change the 'warning' for the access of internal types to 'error'. No luck until I realized that the Build node also contains Warning/Error settings.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
public void dialogFieldChanged(DialogField field) {
			libaryPageDialogFieldChanged(field);
		}
	}
	
	private void libaryPageCustomButtonPressed(DialogField field, int index) {
		CPListElement[] libentries= null;
		switch (index) {
		case IDX_ADDJAR: 
			libentries= openJarFileDialog(null);
			break;
		case IDX_ADDEXT: 
			libentries= openExtJarFileDialog(null);
			break;
		case IDX_ADDVAR: 
			libentries= openVariableSelectionDialog(null);
			break;
		case IDX_ADDLIB: 
			libentries= openContainerSelectionDialog(null);
			break;
		case IDX_ADDFOL: 
			libentries= openClassFolderDialog(null);
			break;			
		case IDX_EDIT: 
			editEntry();
			return;
		case IDX_REMOVE: 
			removeEntry();
			return;			
		}