Here's a handy way to copy sections of chords (and melodies) using drag and drop.
Drag a part marker (or any bar #) to another bar on the screen.
This will copy bars starting at the bar that you dragged, continuing to the next part marker, and inserting them at the bar that you dropped.
Here's a video showing it...
http://screencast.com/t/JlsWQ53GHere's a second video, showing that you can drag any bar number to another bar number (not just a part
marker), and also shows use of 'k' (kwik copy) command.
http://screencast.com/t/thoZUkxNTUzvIf you type 'k' followed by N# of bars, it will copy the last N bars to the destination
e.g.
k4 <ENTER>
If you type 'k' followed by N# of bars, followed by a comma and the source bar # (M), it will copy the last N bars to the destination, starting at bar M
e.g.
k4,5 <ENTER>
This will copy 4 bars to the current position, copying from bar 5