[最佳答案] While I haven't been able to find an official language specification, I have found a blog called bloggeD written by Bhavya Jain. Starting here: http://thoughtsomething.blogspot.com/2009/01/understanding-blogger-template-1.html Jain covers Sections, widgets, includables, includes. b: namespace Data access. data: namespace elements How to use expr: namespace - customize links These blog entries complement the blogger documentation -- Blogger › Help articles › Customize Your Blog › Layouts › Advan