Suggestion: 默认不需要把win作为第一节点

[STOI123]

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不需要把win作为第一节点, 比如TreeMap这个plugin. 也是没把win作为第一节点的. 在没有生成第二个win时, 可以将它隐藏. 否则占用空间. 同时希望增加隐藏的功能. 有些win我会一直开着, 不希望它与现成的win混淆

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