This section describes the "editor".
Sd allows you to edit any part of your sequence while you are
writing it. Normally, of course, you are just adding calls to the end,
or perhaps undoing the last call. What happens if you decide you
want to change something farther back? You could undo all the calls
back to that point, while remembering them or writing them down,
make the changes, and then type them in again. Sd can remember
them for you. It does this with a "clipboard". You move the calls,
one at a time, from the sequence that you have written, onto the clipboard.
Then you can "edit" the sequence at the chosen point, adding calls,
undoing calls, or whatever. When you are done, you can restore the
later calls by moving them from the clipboard back to the sequence.
The Sd/Sdtty clipboard has nothing to do with the Windows
clipboard. The former stores calls, and the latter stores text. You can
cut, copy, and paste text between the Sd text entry window and the
Windows clipboard, using the "Edit text" menu, though there is rarely any
reason to.
The commands to manipulate the clipboard are:
cut to clipboard
paste one call
paste all calls
delete one call from clipboard
delete entire clipboard
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