Final answer:
WYSIWYG editors are useful for web development because they allow users to see what the web page will look like in the browser and display the output without special programs, making the design process intuitive and efficient.
Step-by-step explanation:
WYSIWYG editors have revolutionized web development by allowing users to create websites with real-time visual feedback. Two features that make WYSIWYG (What You See Is What You Get) editors useful for web development are:Allowing users to see in advance what the web page will look like in the browser - This feature ensures that what developers see on their screen is a close representation of the final product, thus reducing the need to constantly preview the page in a separate browser.
Allowing users to see the output without using a special program or viewer - Developers can see the changes they make in real-time, which streamlines the design process and makes it more intuitive, especially for people without extensive coding experience.hese features make the design process more efficient and user-friendly, greatly aiding both beginner and experienced web developers in crafting visually appealing websites without delving deep into code.