[ABNF]Augmented BNF for Syntax Specifications: ABNF, D. Crocker, P. Overell. IETF.[ABOUT]The 'about' URI scheme, S. Moonesamy. IETF.[APNG](Non-normative) APNG Specification. S. Parmenter, V. Vukicevic, A. Smith. Mozilla.[ARIA]Accessible Rich Internet Applications (WAI-ARIA), J. Diggs, J. Nurthen, M. Cooper. W3C.[ARIAHTML]ARIA in HTML, S. Faulkner, S. O'Hara. W3C.[ATAG](Non-normative) Authoring Tool Accessibility Guidelines (ATAG) 2.0, J. Richards, J. Spellman, J. Treviranus. W3C.[ATOM](Non-no...
