让我们来分解一下：<start_function_call — 函数调用开始，call: — 前缀，change_background_color — 函数名，{color:<escapered<escape} — 带转义标记的参数，<end_function_call — 函数调用结束。
This distinction matters for security. The same-font scenario is the dangerous one: a single font that renders both the spoofing character and its Latin target. Cross-font comparisons are closer to what browsers do (supplemental fonts for exotic characters), but the similarity drops significantly.
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const recordedEvent = trace[traceIndex];
最后是 Thumbs.db 文件。Thumbs（缩写自 thumbnails）即缩略图数据库，这是一种 Windows 系统文件，采用 OLE 复合文档结构。它用于储存文件夹中图像和视频的缩略图预览缓存，以加速 Windows 资源管理器对缩略图的加载。