Declare method for copying M/Es.
Copy preview and program inputs.
Declare method for keyer copy.
Copy cut source.
Copy fill source.
Skipping tie state.
Fix typo.
Transition rate comment.
On air state.
Fetch and cleanup program DSK.
Fetch and cleanup the box keyer.
Utility methods to copy M/Es and keyers.
Merge branch 'copy-me'