1. Install the extension
2. Browse the web as normal
3. Mouse over key words in code snippets for quick info
When a website includes a code snippet, Kmdr kicks in to help you understand the code
Quick Info is Kmdr's first IDE feature to help users understand the syntax of the code they find so that there's no need to open a new tab nor application. Users can stay on the website they're on and continue to see the code resource in context while understanding what a particular keyword in the code does.
Kmdr focuses on improving the snippets developers seek out to make the hunt for resources more efficient. Switching applications is a threat to productivity  and the current practice of developers copying and pasting code into an IDE or Editor isn't an effective use of time nor is it aligned with how we learn .