What is blocked style and what is Intended style?

These are ways (styles) how to write business letters.

The blocked style is the most common format nowadays. In this format everything, apart from the letterhead, is ranged on the left-hand margin. There is no indenting; new paragraphs are identified by leaving a line space. Punctuation marks are kept to a minimum. Although they are used in the body of the letter through grammatical necessity, there are no punctuation marks after the address, salutation or closing.

The Intended style is called also "fully displayed style".
In the fully displayed style, the first line of each paragraph is intended. The date and the company’s address usually appear on the right-hand side of the page. The letterhead is displayed in the middle of the page. Full punctuation is used. There is a comma at the end of each line (full stop in the last line), and commas after salutation and closing line.

This is a traditional way of setting out a letter but it is now hardly ever used, because with all the indenting, setting out required and punctuation, it takes longer to type.

Она не русская видно же на англ написано!

Что такое стиль и заблокировали что имеется в виду стиль?