Normally the clipboard is empty. To start the editing process, issue the
cut to clipboard command, or press function key shift-F8.
This will move the last call onto the clipboard, removing it from the
active sequence. If this is done repeatedly, the calls will all be stacked
on the clipboard. Do this until you reach the point in the sequence that
you want to change.
While there are calls in the clipboard, they will be displayed (well, the first three will be displayed) between two rows of dotted lines. This way, you can see what will be pasted back.
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