Hey, so here's a little beta of the object. You can't do that much right now, which means you can basically do what the Overlay does.
There are some known bugs, for example resizing an image crashes when the width/height is below 0.
I wouldn't have released a beta yet but I promised Kisguri to release one when posting a weekly report. 
NOTE: This version will not be compatible with further updates; I am going to add new edit-time properties soon and you won't be able to load old files properly anymore (You can place a new Surface Object and replace the old one with the new one in the event editor though).
You can edit the start-up images by double clicking the icon.
Each image is accessed by an index in the events.
You can add images by using the "Insert image" and "Add image" actions, if you pass 0 for width & height, a prototype will be created. These are used to load files:
Add image with dimensions (0,0)
Load image 0 from file "C:\hello.jpeg", override extension =""
The overide extension parameter can be used to load an image of a certain type, e.g. "png" or "jpeg". If not passed, the object reads the extension from the path and tries to load it.
For import, all graphic filters should work, haven't tested all of them. For export, only png, bmp and jpeg will work.
Happy testing 
