Method append

src/main/java/field/graphics/FLine.java:153–160

adds a line `n` to the end of this line.

(FLine n)

		mod++;
		return this;
	}

	/**
	 * adds a line `n` to the end of this line.
	 */
	public FLine append(FLine n) {

		for (Node nn : n.nodes) {
			this.copyTo(nn);
		}