: This is an anomaly within the filename, as The Jackal is a 1997 political action-thriller film starring Bruce Willis and Richard Gere. Its inclusion suggests this might be a "combo" release or, more likely, a naming error/repacking artifact common in peer-to-peer (P2P) file sharing.
: Indicates that this is the 12th piece of a larger archive. To access the content, you would need all preceding and subsequent parts (e.g., part01 through partXX) to "extract" the data using a tool like WinRAR or 7-Zip . Context: The Era of Multi-Part RARs Madlax-2-The.Jackal.1997-EnTeR1973.part12.rar
: If a download failed at 90%, you only had to redownload one small part rather than the whole movie. : This is an anomaly within the filename,