The software lets you save your work periodically when you're entering a new listing. To save what you've entered so far, in the listing input form click one of the Save buttons, which are along the right side of the form. After a moment, you can continue entering your listing information.
If you cannot finish entering a listing for some reason, and want to leave the form, click the Save Listing as Incomplete and Exit button. Later, you can finish your incomplete listing.
If you have partially entered a listing and have to leave your computer for some reason, when your MLS session is about to expire (usually after one hour of inactivity), the software automatically saves your incomplete listing. A message displays to inform you.
See also
Finishing an incomplete listing