<factimage 123456.0  title="234567.0"/>

If the id put in the title property is a text fact id, the first 250 characters of the text are an alt for the image. 

<factimage 123456.0 editinclude="1"/>

The included image can be set to be editable (by using value 1) or not (by using value 0).

<factimage 123456.0 editinclude="1" nodelete="1"/>

When the image is set to be editable, by using 'nodelete' you can define if the user can delete the image or not. By this token, you can use value 1 to disallow delete function and value 0 to allow it.

<factimage 123456.0 editinclude="1" nodelete="0" showevenifhidden="1"/>

When the image is set to be editable and the delete function is allowed, by using the attribute 'showevenifhidden' you can define if the image should be shown, even it is hidden, or not. By this token, you can use value 1 to always show the image and value 0 to hide the image.