# 标记已演奏的歌曲
SongBook+ 可以标记已演奏的歌曲。这样在演出过程中，您可以轻松识别这首歌是否已经演奏过了。
被标记为已演奏的歌曲将用灰色字体而不是黑色字体显示。
要在演唱会后移除标记，请在菜单中调用“移除已演奏歌曲标记”功能。
启用此功能的设置在“其他”中可以找到。
您还可以设置从何时起 SongBook+ 将一首歌视为已演奏。这可以是歌曲被打开的最短时间，或者是否真的开始了歌曲的播放。
如果您还使用了从未打开歌曲的功能，而只是显示列表，那么轻触歌曲时，该歌曲就被视为已演奏。
可通过长按歌曲直到出现上下文菜单，然后在其中进行切换，来单独切换歌曲的已演奏或未演奏状态。
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.songbookplus.com/zhong-wen/readme/gespielte-songs-markieren.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.