1. Upload file
On the editor, click on link icon 
, a pop up will display, click on browse button to select file to upload, click OK button to insert file to your editor
2. Upload and edit image
On the editor, click on image icon 
, a pop up will display, click on browse button to select your image to upload, click OK button to insert image to your editor
Input width and height for you image in Demensions text boxes.
After image is inserted to you editor, you can use image tool to edit your image: rotate left, right, flip, ...
