code: public function apply(Scope $scope, GenericList $arguments) {
  		foreach ($arguments as $name) {
  			if ($name instanceof Symbol)
  				$func = $alias = $name->symbol;
  			elseif ($name instanceof GenericList) {
  				//obtain symbol pair
  				list($func, $alias) = $name;
  				if (!($func instanceof Symbol))
  					throw new \InvalidArgumentException(sprintf("Use: Expected symbol as first argument, %s found instead.", substr(strtolower(strstr(get_class($func), '\\')), 1)));
  				if (!($alias instanceof Symbol))
  					throw new \InvalidArgumentException(sprintf("Use: Expected symbol as second argument, %s found instead.", substr(strtolower(strstr(get_class($alias), '\\')), 1)));
  				$func = $func->symbol;
  				$alias = $alias->symbol;
  			}
  			else throw new \InvalidArgumentException(sprintf("Use: Unexpected %s %s as argument.", substr(strtolower(strstr(get_class($name), '\\')), 1), $name->__toString()));		
  			if (!function_exists($func)) throw new \UnexpectedValueException("Use: Function $func not found.");			
  			$scope->symbols[$alias] = new PHPFunction($func);
  		}
  	}
docs: Imports a function into current environment
  Usage: (use utf8_decode) (use utf8_encode utf8enc)
  (non-PHPdoc)
  @see \eMacros\Applicable::apply()