File Extension WLS File Format 602Tab document WLS stands for 602Tab document. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question LDAP write access to Domino Directory Barcode Scanner - new asp.net application BEA9.2 WLS managed server not recognize the tools.jar file.