If you want to import a picture, just place the image file(s) in the 'Imports' folder and then start Rainbow.
Only place COPIES of the picture files in that folder, since the program will automatically keep the folder clean by destroying the file(s) after the import.
At the moment Rainbow can import pictures in the following formats only:
PICT, Targa, RAW, Rainbow.
Don't try to put any other picture types in the 'Imports' folder.
Please note that some of the file formats must have a correct file extension (the 3 letters after the dot): 'Rainbow.RBW', 'Targa.TGA', 'Raw.RAW'.
PICT files can have any name you want.
Tech Note:
Although Rainbow can import various types of RAW pictures, an exported RAW picture from Rainbow looks like this: