Use the bounding box tool to draw boxes around the requested target of interest:

1. Draw a rectangle using your mouse over each instance of the target.
2. Make sure the box does not cut into the target, leave a 2 - 3 pixel margin
3. When targets are overlapping, draw a box around each object, include all contiguous parts of the target in the box. Do not include parts that are completely overlapped by another object.
4. Do not include parts of the target that cannot be seen, even though you think you can interpolate the whole shape of the target.
5. Avoid shadows, they're not considered as a part of the target.
6. If the target goes off the screen, label up to the edge of the image.