If you are downloading or upgrading to this version, here are the headline features you get that were cutting-edge at the time:
Click on the Channel Rack. Use the Stamp Tool (right-click drawing) to quickly create hi-hat rolls or kick patterns. v20.8.4.2 features an improved "Articulator" that lets you strum chords in the piano roll—perfect for trap melodies. Image-Line FL Studio Producer Edition v20.8.4.2...