public CommandExecutionResult executeNow(DescriptionDiagram system, List<String> lines) {
		StringUtils.trim(lines, false);
		final RegexResult line0 = getStartingPattern().matcher(lines.get(0).trim());
		final String symbol = line0.get("TYPE", 0).toUpperCase();
		final LeafType type;
		final USymbol usymbol;

		if (symbol.equalsIgnoreCase("usecase")) {
			type = LeafType.USECASE;
			usymbol = null;
		} else if (symbol.equalsIgnoreCase("database")) {
			type = LeafType.DESCRIPTION;
			usymbol = USymbol.DATABASE;
		} else {
			throw new IllegalStateException();
		}

		final Code code = Code.of(line0.get("CODE", 0));
		Display display = Display.create(lines.subList(1, lines.size() - 1));
		final String descStart = line0.get("DESC", 0);
		if (StringUtils.isNotEmpty(descStart)) {
			display = display.addFirst(descStart);
		}

		final List<String> lineLast = StringUtils.getSplit(MyPattern.cmpile(getPatternEnd()),
				lines.get(lines.size() - 1));
		if (StringUtils.isNotEmpty(lineLast.get(0))) {
			display = display.add(lineLast.get(0));
		}

		final String stereotype = line0.get("STEREO", 0);

		final ILeaf result = system.createLeaf(code, display, type, usymbol);
		result.setUSymbol(usymbol);
		if (stereotype != null) {
			result.setStereotype(new Stereotype(stereotype, system.getSkinParam().getCircledCharacterRadius(), system
					.getSkinParam().getFont(FontParam.CIRCLED_CHARACTER, null)));
		}

		result.setSpecificBackcolor(HtmlColorUtils.getColorIfValid(line0.get("COLOR", 0)));

		return CommandExecutionResult.ok();
	}