Syntax in "If condition" in workflow Agent Team

Summary:

Please, can someone elaborate with examples for syntax in Agent Team of type workflow for "If condition"?

"If condition" has a syntax, with "==" , "!=".

I have this working example:

{{$context.$variables.varBusinessRelationshipCode=='SPEND_AUTHORIZED'}}

I would like to have some working examples for combined conditions with OR/AND and with "(("

I do not know if "OR" IS : or/OR/||

I do not know if "AND" OR IS : and/AND/&&

I do not know if to compare I have to use "==" or "===" . By trial and error I guessed "=" is not ok.

I use the examples in instances to learn, but I cannot find them for this.