public function mark($label)
	{
		$this->marks[] = new Mark($label, $this->ended(), $this->now(), memory_get_usage(true));

		return $this;
	}
public function mark($label)
	{
		$this->marks[] = new Mark($label, $this->ended(), $this->now(), memory_get_usage(true));

		return $this;
	}
public function mark ( $ label ) { $ this -> marks [ ] = new Mark ( $ label , $ this -> ended ( ) , $ this -> now ( ) , memory_get_usage ( true ) ) ; return $ this ; }
Output a time mark

The mark is returned as text enclosed in <div> tags
with a CSS class of 'profiler'.

@param   string  $label  A label for the time mark
@return  string  Mark enclosed in <div> tags
Output a time mark