To upload an image using CKBox, do the following:
The image will appear in the content.
Note: You can choose more than one file at a time.
Another way to upload images is via the built-in drag & drop mechanism. Simply click the file you need to upload, drag it into the desired position in the editor and drop it. The upload will be done automatically!
Non-embeddable files (like PDFs) are inserted as links. To upload a PDF file, do the following:
A link to the file will appear in the content.