Calling `console.group()` and an indentation level to further logs. For example: ``` js console.log(1); console.group() console.log(2); console.log(3); console.group(); console.log(4); console.log(5); console.groupEnd(); console.log(6); console.groupEnd(); console.log(7); ``` will output: ``` 1 ..2 ..3 ....4 ....5 ..6 7 ``` See: - https://developer.mozilla.org/en-US/docs/Web/API/Console/group - https://developer.mozilla.org/en-US/docs/Web/API/Console/groupEnd - https://developer.mozilla.org/en-US/docs/Web/API/Console/groupCollapsed