Credit: https://www.w3.org/WAI/WCAG21/Techniques/#pdf
- SCR1: Allowing the user to extend the default time limit
 - SCR2: Using redundant keyboard and mouse event handlers
 - SCR14: Using scripts to make nonessential alerts optional
 - SCR16: Providing a script that warns the user a time limit is about to expire
 - SCR18: Providing client-side validation and alert
 - SCR19: Using an onchange event on a select element without causing a change of context
 - SCR20: Using both keyboard and other device-specific functions
 - SCR22: Using scripts to control blinking and stop it in five seconds or less
 - SCR24: Using progressive enhancement to open new windows on user request
 - SCR26: Inserting dynamic content into the Document Object Model immediately following its trigger element
 - SCR27: Reordering page sections using the Document Object Model
 - SCR28: Using an expandable and collapsible menu to bypass block of content
 - SCR29: Adding keyboard-accessible actions to static HTML elements
 - SCR30: Using scripts to change the link text
 - SCR31: Using script to change the background color or border of the element with focus
 - SCR32: Providing client-side validation and adding error text via the DOM
 - SCR33: Using script to scroll content, and providing a mechanism to pause it
 - SCR34: Calculating size and position in a way that scales with text size
 - SCR35: Making actions keyboard accessible by using the onclick event of anchors and buttons
 - SCR36: Providing a mechanism to allow users to display moving, scrolling, or auto-updating text in a static window or area
 - SCR38: Creating a conforming alternate version for a web page designed with progressive enhancement
 - SCR39: Making content on focus or hover hoverable, dismissible, and persistent