This is a test post to show how thumbnailing images works.

1. First, you select "Image Gallery" from the toolbar above (). 
2. Next, if the image you want is already uploaded, you double-click the thumbnail (if it exists)
3. If the image isn't already uploaded, follow the steps to upload it (and check the "Create Thumbnail" option)
4. After you double-click the image the image gallery will disappear and the selected image will appear in the document (as shown below)