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Control-/ selects the entire contents of the widget.

=item [19]

Control-\ clears any selection in the widget.

=item [20]

The F16 key (labelled Copy on many Sun workstations) or Meta-w
copies the selection in the widget to the clipboard, if there is a selection.

=item [21]

The F20 key (labelled Cut on many Sun workstations) or Control-w
copies the selection in the widget to the clipboard and deletes
the selection.
If there is no selection in the widget then these keys have no effect.

=item [22]

The F18 key (labelled Paste on many Sun workstations) or Control-y
inserts the contents of the clipboard at the position of the
insertion cursor.

=item [23]

The Delete key deletes the selection, if there is one in the widget.
If there is no selection, it deletes the character to the right of
the insertion cursor.

=item [24]