Ability to draw an empty box around one or more objects
Add the ability to draw an empty box (or any standard set of shapes) around one or more objects. Charts and graphs don't have an outline option that I've seen so it would be nice to be able to draw a "border" of sorts around them. Similarly, if 2 or more charts go together, it would be nice to be able to visually group them. Another use would be to create a placeholder for something the developer wishes to add later.
The shapes should be able to be filled with varying fill colors in varying transparencies and the borders should allow for different colors.