The clipboard may be used to copy the content from one application to another. In ECGSIM, you may copy the content in any of the four panes as an image onto the clipboard by pressing <Ctrl>-C while the mouse is within the pane, or by selecting -Copy- from the main menu item -Edit- and then choose the item that corresponds to the pane to copy.
From the clipboard the image may be pasted into other applications. However, ECGSIM should still be running at the time that you paste the image. ECGSIM may be minimized during the paste operation.