/**
* Add an internal link
*
* Add an internal link to the rectangle specified by its top-left
* position, width and height. The last parameter is the target identifier
* to link to.
*
* @param float $x
* @param float $y
* @param float $width
* @param float $height
* @param string $target
* @return void
*/
public function addInternalLink($x, $y, $width, $height, $target)
{
$this->document->link($x, $y, $width, $height, $link = $this->document->addLink());
if (!isset($this->internalLinkSources[$target])) {
$this->internalLinkSources[$target] = array($link);
} else {
$this->internalLinkSources[$target][] = $link;
}
}