Has anyone come across post facto notes recorded on baptism records, for instance, say, a note on the baptism record about a person’s later marriage?

Has anyone come across post facto notes recorded on baptism records, for instance, say, a note on the baptism record about a person’s later marriage? I have noticed these a few times on German baptism records written in Latin for some Catholic churches and was wondering if this was a standard practice or simply a fluke.

Azua Stofleth