UUE files are graphics that have been encoded for 7-bit transmission using the 'uuencode' method. These files are very popular on the Internet, especially in the Usenet Newsgroups. ThumbsPlus supports single and multi-part UUE files; multi-part files must have an extension indicating the part number (i.e., File.001, File.002, File.003). Only the .001 (or .UUE) file needs to be in the file list; the other parts will be automatically referenced when needed during decoding.
There are several loading options for UUE files, which include the capability to decode to a specific folder and to remove the original file. See Options | File Loading - UUdecode.