With Christmas day almost upon us, there is a great likelihood that the Mac App Store will be under siege by all of the folks who have new Mac products and want to try installing a few apps.

Courtesy of Apple
The Mac App Store is pretty robust, but if it gets overwhelmed by users, your download may not finish, or it may be so slow that you decide to give up and try later.
If you run into any trouble, here's a guide that explains how to continue or restart a download.
How to Re-Download Apps From the Mac App Store

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