In a recent update, we added a minor new feature: you can now copy and paste lines even if they are not used to connect any other objects on a Kerika Whiteboard.
We always let you copy and paste lines that were used to connect other objects, like in this scenario:

But now you can also copy and paste freestanding lines (i.e. lines that are not anchored at either end on anything else), like this:

The fact that copying/pasting freestanding lines was not possible before was actually a conscious design decision on our part, but looking back we can’t figure out why it seemed like a good idea at the time :-/