Scholarly reading often involves engaging with various supplementary materials beyond PDFs to support understanding. In practice, scholars frequently incorporate such external materials into their reading workflow through annotation. However, most existing PDF annotation tools support only a limited range of media types for embedding annotations in PDF documents. This paper investigates cross-media annotation as a design space for augmenting academic reading. We present a design exploration of a cross-media annotation tool that allows scholars to easily link PDF content with other documents and materials such as audio, video or web pages. The proposed design has the potential to enrich reading practices and enable scholars to guide and support other researchers' reading experiences.

翻译：学术阅读常常需要超越PDF本身，结合各种辅助材料来促进理解。在实践中，学者通常通过注释将此类外部材料融入阅读流程。然而，现有的大多数PDF注释工具仅支持有限类型的媒体嵌入到PDF文档中进行注释。本文探讨了跨媒体注释作为增强学术阅读的设计空间。我们介绍了一种跨媒体注释工具的设计探索，该工具使学者能够轻松地将PDF内容与音频、视频或网页等其他文档和材料关联起来。所提出的设计有潜力丰富阅读实践，并使学者能够引导和支持其他研究人员的阅读体验。