PHP源码，C代码

Question

/* {{{ proto mixed key(array array_arg)
   Return the key of the element currently pointed to by the internal array pointer */
PHP_FUNCTION(key)
{
    //code...
}
/* }}} */

为什么前后都要用三个花括号呢？

Answer 1

Emacs/Vim folding symbols

Answer 2

三个括号那里不是注释了吗