Hello. This support page about notes <https://www.zotero.org/support/notes>; don't mention the notes field in links and files, that exist at least in Zotero Standalone.

What is the good practice about writing notes? If I want to write notes about a file or link can I write them in the file or link notes windows, or is it better to open a child note? Notes written in the file/link windows are synchronized just like the child notes and the standalone notes?