Discoverable, structured, semantic, machine-readable

One final but very important advantage that is tightly linked to having a repository of natively web-based - rather than PDF - papers is discoverability. The entire full text of papers - not just the title and abstract - will be indexed by search engines and scholarly repositories, boosting content visibility. Moreover, web-based articles have a well-defined semantic structure, making them fully machine-readable objects. The arXiv of the future will rethink papers as APIs that access semantically structured content.