Here you can browse for an image file to import as a background (aka backdrop).

You can import BMP, PNG and JPEG (aka JPG) images of any size and any bit-depth.

You can type in the beginning of a folder or file name to move the cursor to it. You can also press a letter repeatedly to cycle through files and folders starting with that letter.

Press F5 to refresh the directory as well as poll the names of all removeable drives (on Windows only).