200 	protected $crosslink = NULL;  variable in ProjectCrossLink
204 		$this->crosslink = $file->crosslink(); 
207 	public function crosslink() { return $this->crosslink; }  function in ProjectCrossLink
213 			&& $this->crosslink == $file->crosslink();
218 		$this->crosslink = $file->crosslink();
222 		if (!$this->crosslink) return NULL;
223 		$path = explode(":", $this->crosslink);
244 		if (!$this->crosslink) {
250 		$crosslink = $this->crosslink;
253 			file_put_contents($log, "file $crosslink does not exist!\n");
256 		file_put_contents($log, "linked $crosslink");