_original_thumb
Provides a URL of an image to display when asking whether a user would like to replace an image.
Default Value
None.
Remarks
When asking whether a user would like to replace an image or save a new copy, applications have the option of presenting a thumbnailed
version of the original. Users can then compare the original and edited images to see what changes have been made.
This parameter is only valid when used in conjunction with the _replace and
_imageid parameters.
The thumbnail image should be no larger than 240x240 pixels.
See Also
_export,
_replace,
_imageid