What is the role of descriptive attributes in the situational aspect of articles ?

1 particularly worthy of note in the constructions of  nominal "convergencies"
2 particularly worthy of note in the constructions of syntactic "convergencies"
3 to  contrast the definite article with the noun against the two other forms of article determination of the noun
4 to involve the interpretation of the article non-use as the zero form of the article
5 to serve as an indicator of the type of nounal information