What are the general characteristics of decimal Dewey classification?

As i know, there are atlaest 10 general characteristics of decimal Dewey classification.

1:Basic structure, means the use of decimal after three digits.

2:Notations, means different symbols.

3:Hierarchy, means its divided into different classes step by step.

4:Instructions for classification.

5:Auxilary table.

6:Relative index with all the terms that someone can use.

7:Mnemonics.

8:Provision for detailed and broad classifcation.

9:Abridged edition.

10:revision policy.

Source:

DDC