_ExtendSelection
_ExtendSelection(start, false, useInitialSelection);
_ExtendSelection(end, false, useInitialSelection);
_ExtendSelection(start, false, useInitialSelection);
_ExtendSelection(end, false, useInitialSelection);
void _ExtendSelection(TermPos, bool inclusive,
fView->_ExtendSelection(fView->fInitialSelectionStart, true, false);
fView->_ExtendSelection(fView->_ConvertToTerminal(where), true,
fView->_ExtendSelection(
fView->_ExtendSelection(