Editors

Use Drum Editor when Drum Map is assigned: Shows drum note symbols in parts on MIDI tracks to which drum maps are assigned. The parts automatically open in the Drum Editor on double-click. This overwrites the Default MIDI Editor setting.
Default MIDI Editor: Determines which editor is opened when you double-click a MIDI part or when you select it and press Ctrl/Cmd-E. This setting is overwritten for tracks with drum maps if Use Drum Editor when Drum Map is assigned is activated.
Editor Content Follows Event Selection: Open editors show the events that are selected in the Project window.
Double-click opens Editor in a Window/in Lower Zone: Determines where an editor is opened when you double-click an audio event or a MIDI part, or when you use the key command assigned to Open/Close Editor.
Open Editor Commands open Editors in a Window/in Lower Zone: Determines where an editor is opened when you use an open command from the Audio or MIDI menu or the corresponding key commands.