### set menthod=manual

#### 折叠不会被写入到文件里，如果使用catless查看代码，代码将以无任何折叠的方式显示。

A folder is just a tag which tells vim to display something as a folder. So it is also possible to write a file with folders. To mark the start of a folder just use for example in a comment of a source file) and to mark the end of the folder.