The Run menu provides commands that run Data Splitter :

When file input is chosen the file specifications listed in the Input/Output menu "Input files" dialog are scanned.

When email input is chosen the message folders listed in the Input/Output menu "Input email folders" dialog are scanned.   All messages in the specified folders are scanned.

When URL input is chosen the URLs listed in the Input/Output menu "Input URLs" dialog are scanned.

When "Run" is chosen the program chooses the first input source list in which one or more items are specified :

  1. Email message folders
  2. URLs
  3. File specifications

For example, if both URLs and file specs are specified Data Splitter will scan the URL input list when "Run" is chosen.