What are Attribute, Class, Property, and Stereotype in Alfabet?

Product/components used and version/fix level:

Alfabet

Detailed explanation of the problem:

I am a new user of Alfabet, and find a few terms such us attribute, class, property and stereotype in Alfabet public training. Since I am unclear about the definition of these terms and the relationship between each terms, I am trying to ask if we have a document or any learning resource for reference. Thanks!

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Question related to a free trial, or to a production (customer) instance?

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