vim – 如何让NERDCommenter在特定列中添加注释？

默认情况下,NERDCommenter的工作方式如下：

//level1
    //level2
        //level3

我怎么去这样工作？

//level1
//    level2
//        level3

从 documentation：

[count]<leader>cl  
[count]<leader>cb    |NERDComAlignedComment|

Same as |NERDComComment| except that the delimiters are aligned down the left side (cl) or both sides (cb).