(PECL haru >= 0.0.1)
HaruPage::createTextAnnotation — Create new HaruAnnotation instance
$rectangle
   , string $text
   [, object $encoder
  ] )Creates a new HaruAnnotation instance.
rectangle
     An array with 4 coordinates of the annotation area.
text
     The text to be displayed.
encoder
     Optional HaruEncoder instance.
Returns a new HaruAnnotation instance.
Throws a HaruException on error.