Here is an interesting example showing what it looks like: https://github.com/cuelang/cue/blob/e5d8d09b3ba2e4f48c84a3b5...

I used the following command on the cloned repository to find it[1]:

  find . -iname '*.cue' | xargs ls -l | tr -s ' ' | cut -d ' ' -f5,9 | sort -n

[1] Note that 'find' has a '-printf' option which could have been used to simplify this one-liner.