DragginMath: Flick Left to Copy or Delete

Flick left on any node. A dialog appears.

The first choice in the dialog copies the current node as an expression in the current context. You will see that copied node appear immediately as its own operator tree, and also after a semicolon in the Top Text.

The second choice in the dialog copies the current node as text to the copy/paste buffer. There is no visible change when you do this, but you can now paste this text into any other app that accepts text.

If the node is the root of an operator tree and it is not the only tree present, a third choice in the dialog offers to delete it. You may not delete the last operator tree on the screen this way.