What is the syntax of Uncle Cabin?

It appears you are asking about the syntax of "Uncle Cabin". However, there is no programming language or software system known as "Uncle Cabin".

It's possible you're thinking of something else, or there might be a typo. Could you please clarify what you are referring to?

For example, are you asking about:

* A specific programming language? If so, please provide the name of the language.

* A particular software tool or library? If so, please provide the name of the tool or library.

* A different term altogether? If so, please provide the correct term.

Once you clarify your question, I can provide you with more helpful information.