Every paper has a Table of Contents (ToC) entry. The ToC entry is the shortest summary of a paper, and is always freely available online for anyone to view. It also appears in syndicated content (e.g., in RSS feeds, e-mail alerts, and on social media sites such as Facebook) and so is a mini advertisement for your research.从上面的描述可以看出,我理解TOC实际上是比abstract更短的摘要,和highlight又有些像。