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The Next and Prior keys move the insertion cursor forward or backwards
by one screenful and clear any selection in the text.
If the Shift key is held down while Next or Prior is typed, then
the selection is extended to include the new character.
Control-v moves the view down one screenful without moving the
insertion cursor or adjusting the selection.

=item [12]

Control-Next and Control-Prior scroll the view right or left by one page
without moving the insertion cursor or affecting the selection.

=item [13]

Home and Control-a move the insertion cursor to the
beginning of its line and clear any selection in the widget.
Shift-Home moves the insertion cursor to the beginning of the line
and also extends the selection to that point.

=item [14]

End and Control-e move the insertion cursor to the
end of the line and clear any selection in the widget.
Shift-End moves the cursor to the end of the line and extends the selection
to that point.

=item [15]

Control-Home and Meta-E<lt> move the insertion cursor to the beginning of
the text and clear any selection in the widget.
Control-Shift-Home moves the insertion cursor to the beginning of the text
and also extends the selection to that point.

=item [16]

Control-End and Meta-E<gt> move the insertion cursor to the end of the
text and clear any selection in the widget.
Control-Shift-End moves the cursor to the end of the text and extends
the selection to that point.

=item [17]

The Select key and Control-Space set the selection anchor to the position
of the insertion cursor.  They don't affect the current selection.
Shift-Select and Control-Shift-Space adjust the selection to the
current position of the insertion cursor, selecting from the anchor
to the insertion cursor if there was not any selection previously.

=item [18]

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]

Backspace and Control-h delete the selection, if there is one
in the widget.
If there is no selection, they delete the character to the left of
the insertion cursor.

=item [25]

Control-d deletes the character to the right of the insertion cursor.

=item [26]

Meta-d deletes the word to the right of the insertion cursor.

=item [27]

Control-k deletes from the insertion cursor to the end of its line;
if the insertion cursor is already at the end of a line, then
Control-k deletes the newline character.

=item [28]

Control-o opens a new line by inserting a newline character in
front of the insertion cursor without moving the insertion cursor.

=item [29]

Meta-backspace and Meta-Delete delete the word to the left of the
insertion cursor.

=item [30]

Control-x deletes whatever is selected in the text widget.

=item [31]

Control-t reverses the order of the two characters to the right of
the insertion cursor.

If the widget is disabled using the B<-state> option, then its
view can still be adjusted and text can still be selected,
but no insertion cursor will be displayed and no text modifications will
take place.

The behavior of texts can be changed by defining new bindings for
individual widgets or by redefining the class bindings.

=back

=head1 PERFORMANCE ISSUES