说明：  《Xcode开发者入门引导》简体中文版下载. 作者/ Bert Altenburg, Alex Clarke, Philippe Mougin ... 而且要把向其他开发人员（礼貌的）反馈使用意见变成一种习惯。
( Xcode Developer Getting Started guide Simplified Chinese version to download. Author/Bert Altenburg, Alex Clarke, Philippe Mougin ... but also to other developers (courtesy of) feedback views into the use of a habit.)