I tweaked the Lib\Phile\Model\Page.php

Some plugins wanted to use the trigger before_parse_content. And I was confused by the process as shown here:

public function getContent() {

    Event::triggerEvent('before_parse_content', array('content' => $this->content, 'page' => &$this));

    $content = $this->parser->parse($this->content);

    Event::triggerEvent('after_parse_content', array('content' => &$content, 'page' => &$this));
return $content;

The after parse content lets you modify $content in the plugin, but the before parse content does not let you modify $content.

So I modified the line for before_parse_content to follow after_parse_content

public function getContent() {

    Event::triggerEvent('before_parse_content', array('content' => &$this->content, 'page' => &$this));

    $content = $this->parser->parse($this->content);

    Event::triggerEvent('after_parse_content', array('content' => &$content, 'page' => &$this));
return $content;

.... There is another way......