Specifies a list of directories in which to look for image files as specified by the image attribute or using the IMG element in HTML-like labels. The string should be a list of (absolute or relative) pathnames, each separated by a semicolon (for Windows) or a colon (all other OS). The first directory in which a file of the given name is found will be used to load the image. If imagepath is not set, relative pathnames for the image file will be interpreted with respect to the current working directory.