Decimal section numbering is a way to organize information. It can be used to organize books, chapters, paragraphs, and many other pieces of information.
By using decimal section numbering, each part of the information can be given a number. For example, if you were organizing a book, you could use decimal section numbering like this: 1.1, 1.2, 1.3. The number 1 would represent the first chapter, and the numbers after the decimal point (like 1.1, 1.2, etc.) would show the different sections in that chapter.
This way of organizing information makes it easier to find and reference specific parts of the information. It also makes it easier to add or change parts of the information, since each part will have its own number that you can use to quickly reference it.