Here is an assignment for you.

Create two Draw files.
Insert an image in one file and save it.
Embed an image in another file and save it.
Compare both the file sizes.
In the file in which you linked the image
Change the size of the image.
Check if the change is reflected in the original file.
Individual objects or a group of selected objects can also be exported
Convert only the clouds and the mountain
from the WaterCycle Draw file into  JPEG format