private void setDetailedDescription(String helpType) {
		if (helpType == null || helpType.equals("")) {
			// no specific helpType -> general help!
			setGeneralHelpContent();
		} else {
			switch (helpType) {
				case HELP_ADD:
					setAddHelpContent();
					break;
				case HELP_DELETE:
					setDeleteHelpContent();
					break;
				case HELP_CHANGE:
					setChangeHelpContent();
					break;
				case HELP_COMPLETE:
					setCompleteHelpContent();
					break;
				case HELP_SEARCH:
					setSearchHelpContent();
					break;
				case HELP_GOTO:
					setGotoHelpContent();
					break;
				default:
					assert false : "HelpType: " + helpType;
			}
		}
	}