The Prophet X Synthesizer Data Window is made visible by ensuring the View Prophet X Synthesizer Data option in the Window Menu is checked.
This Child Window is a special View that shows the Prophet X data that has been imported and exported.
The purpose of this windows is to allow drag and drop transfers of
Programs and Playlists between summit.factory and the Prophet X via
the MIDI Interface.
And it allows you to import and manipulate Prophet X data without creating SYSEX files, if you wish to make a quick edit. If you edit data in this window then if the Automatically Update Prophet X After Synth Window Edit option is ticked in theĀ MIDI Preferences tab in the Preferences Dialog