1. Full Block Style
Full block style is a letter format in which all text is justified to the left margin. In block letter style, standard punctuation is placed after salutations and in other headings.
2. Block Style
Block Style is a letter format that every line starts flush with the left margin.
3. Semi Block Style
Semi-block format or style is frequently called modified semi-block because it is a slightly less formal modification of full block format. This letter style places the date line in alignment with, or slightly to the right of dead center. Another option for placing the date line in semi-block is flush right. Similar to full block, semi-block places the inside address, salutation and any end notations flush with the left margin. However, unlike full block, each body paragraph of semi-block is indented five spaces. The complimentary close and signature block are aligned under the date.
4. Indented Style
Indented style is somewhat more complicated than other popular styles of business writing. In indented style, new paragraphs in a piece of writing are indented—that is, they begin about 1.5 centimeters to the right of the left margin. Other parts of a business letter are moved farther to the right half of the page. Indented style is one of the older formats for business writing currently in use, though other formats are becoming more popular. Indented style is a format that many of today’s business people were trained to use.
5. Simplified Style
This is another modification of the fully-blocked style. This style is used when you write a letter and you do not know the name and title of the person to whom you are writing the letter. The salutation and the complimentary closing are used in this style. The subject is mentioned din capital fonts and that subject need not be underlined.
6. Hanging Indented Style
This very useful style places the first words of each paragraph prominently on the page. It is useful for letters that deal with a variety of different topics. However, for normal business communications, this style is very rarely used. The first line of the paragraph begins at the left-hand margin. And the other lines of the same paragraph are indented three to four spaces. This is the reversal of semi-indented style discussed in other page.