Have a question or suggestion regarding a specific ProtoSchool lesson? Please use this template to share it! **URL of the lesson that's confusing:** https://proto.school/mutable-file-system/05 **What's confusing about this lesson?** > mtime: an object with numeric secs and nsecs properties I am assuming `mtime` in the above text is "last modified time" ? **What additional context could we provide to help you succeed?** Explain what purpose the `mtime` object is meant to serve. e.g. add "that shows when the file was last modified" **What other feedback would you like to share about ProtoSchool?** N/A