What was the Historical Precursor for .NET Attributes?

Question

What languages or platforms influenced the .NET 1.0 Team to build-in the concept of Attributes from the very start? Was this an Aspect-Oriented thing? Serialization? or some

Answer 1

Delphi/Object Pascal properties? If I remember correctly, one of the designers of Delphi is also one of the designers of .NET. The syntax is also similar.