A11Y (an acronym that stands for Accessibility - especially useful if you forget how to spell it). I still remember when Section 508 Guidelines were federally mandated way back in 1998<ref>In 1998, Congress amended the Rehabilitation Act of 1973 to require federal agencies to make their electronic and information technology (EIT) accessible to people with disabilities.</ref> On my bookshelf, I have a copy of Robert Yonaitis' book Understanding Accessibility from 2002 [[Special:BookSources/1-930616-03-1|ISBN:1-930616-03-1]]
See the [https://www.a11yproject.com/checklist/ A11Y checklist] for a generic reference providing a quick implementation of WCAG