If you remake the content that you have typesetted for printed article version in graphic program Adobe InDesign, you can easily transfer in some more complex graphical compositions. First, select all objects in InDesign that you want to transfer and press Ctrl + C. Then open Adobe Photoshop, create a new image and press Ctrl + V. Now you get an image with transparent background. Save it as transparent PNG and use it in Triobo editor.

Sample complex Triobo graphics

Text frames in the example above are made in Triobo editor, but the composition of images has been all transferred at once from InDesign to Photoshop and saved as transparent PNG.