Add ability to select multiple files and/or folders (and on different panels too) for splitting. 'Compress to Archive' window can appear with previously selected files/folders and then - the newly created archive can be placed in 'Split File...' window. The proposed procedure is next: 1. You select multiple files/folders. 2. Press 'Split File...'. 3.'Compress to Archive' window appears for selected files/folders. 4. After pressing 'OK' - archive with selected files will be created. 5. (Created archive can be selected in panel) then - 'Split File...' window appears for previously created archive. Also if multiple files/folders are selected 'Split File...' menu entry can be changed into 'Compress to Archive and Split...' or something.