About Cypher Manual 3.5

I'm currently using this one. However we have 6 other above versions. Is it considered too old? Or it shouldn't be a problem. Thank you

If the 3.5 refers to the version, then it is very old. You should use the documentation that aligns with the version you are using.

The current version is 5.24

This thread has the release notices

Thank you Gary. Hope the new one doesn't differ too much.

There have been new features and new syntax introduced along the way.