帮忙翻译一下约克大学的编程题目，并且设计一下。

You are required to design and implement a vector graphics drawing package which allows the user to construct images from simple shapes
These shapes must at least include :lines sequares rectangles triangles and circles.

The program must allow closed shapes(i.e. those other than lines)to be filled. The user should be able to select the lines and the fills.You might like to think about how the user could construct more general shapes from a collection of lines.The user must be able to manipulate the shapes ,probably using the keyboard,to choose their position,size,orientation and the order in which they are drawn(the z-order).
The program must use a linked list to store the information representing the elements of the image.