Kdiff3 - how to copy from one side to the other

Say I compare two files with kdiff3, and it finds a difference in line 10. Is there a way to copy from left to right or right to left, as we one can do for example with kompare?

I poked around in the commands, looked in the man page, and the kdiff3 help and could not find anything.

In the README in the kdiff3 source code it is written that kdiff3 “provides […] an integrated editor for comfortable solving of merge-conflicts”.
That may be what I am looking for but I don’t find a use a way to use it.