The original value of the feedback message is a blank string.
反馈消息的初始值是一个空白字符串。
2
Hell, now that he thought about it, a blank card was far worse than an inscribed one - the understood message was of such deep love and passion that words wouldn't convey what they felt.
You can set the security profile property at the message flow level, so that a node can inherit it if the node security profile property is left blank.