Copy and Paste Large Parts

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It is possible to copy and paste small portions of the project. I wish that I could copy paste large parts, including multiple tracks. Thanks!
you can clone whole tracks in song-editor:
left-click the tracks tool-icon
choose clone

win shortcuts are not implemented.
It would be extremely helpful if this were implemented. Sometimes I want to go back and edit a part of my song, but I can't do it easily because I have to move everything separately.