A keyboard caret move over the selectable text, in reading order (Shift+arrow keys extend by one).
public enum SelectionMove
Spec #33 viewer capability 4.
kind:method, kind:property, kind:ctor. Press Esc to clear.CharacterBackwardOne glyph back (Left).CharacterForwardOne glyph forward (Right).DocumentEndTo the end of the document (Ctrl/Cmd+End).DocumentStartTo the start of the document (Ctrl/Cmd+Home).LineDownTo the nearest position on the line after, in reading order (Down).LineEndTo the end of the caret's line (End).LineStartTo the start of the caret's line (Home).LineUpTo the nearest position on the line before, in reading order (Up).WordBackwardTo the start of the word before the caret (Ctrl/Option+Left).WordForwardTo the end of the word after the caret (Ctrl/Option+Right).