protected Control createContents(Composite parent) {
mProject = ((INlpElement) getElement()).getNlpProject();
mDotCorpusElement = mProject.getDotCorpus();
TypesystemElement typesystem = mProject.getTypesystemElement();
if (typesystem == null) {
Label message = new Label(parent, SWT.NONE);
message.setText("Please set a valid typesystem file first.");