What is the primary purpose of the KBD phrase element?

The primary purpose of the KBD (keyboard) phrase element is to denote text that is intended to be entered by the user via a keyboard. This element is specifically designed to represent user input, making it clear in documentation and web content what information is required from the user. By using the KBD element, it enhances accessibility and understanding for users, particularly those relying on assistive technologies, by visually and semantically distinguishing user input fields or instructions from other types of content.

For instance, when instructional materials or user guides indicate what a user should type, employing the KBD element ensures that this text stands out and is appropriately formatted, helping users to identify input areas quickly and correctly. This approach aligns with best practices for accessible document design as it focuses on clarity and usability.