WCAG in Plain English

Provide additional help (like text instructions, help links, or tooltips) when label alone might be ambiguous or confusing.

Before submitting, all forms must allow reviewing the input, correcting mistakes, or confirming.

This used to require HTML with proper structure and no critical markup errors (like missing tags or duplicate IDs). The requirement is removed but still helps with compatibility.

Interactive elements must have a clear name (what it is), the correct role (what it does), and any current value or state, so that assistive technologies can interpret and interact with them correctly.

Status updates (like “form sent” or “5 items in cart”) must be coded using proper roles (like role="status" or role="alert"), be detectable by assistive technologies, and not require moving focus.