format letter

Business letters generally conform to one of four indentation formats: Block, Semi-Block, Modified Block, and Modified Semi-Block. Put simply, "Semi-" means that the first lines of paragraphs are indented; "Modified" means that the sender's address, date, and closing are significantly indented.

Block

In a Block format letter, (1) all text is aligned to the left margin, (2) paragraphs are not indented. 3) parts and paragraphs are separated by double or triple spacing.

Semi-Block

In a Semi-Block format letter, (1) all text is aligned to the left margin, (2) paragraphs are indented.

Modified Block

In a Modified Block format letter, (1) all text is aligned to the left margin, except for the author's address, date, and closing; and (2) paragraphs are not indented. The author's address, date, and closing are usually indented three inches from the left margin, but can be set anywhere to the right of the middle of the page, as long as all three elements are indented to the same position.

Modified Semi-Block

In a Modified Semi-Block format letter, (1) all text is aligned to the left margin, except for the author's address, date, and closing; and (2) paragraphs are indented. The author's address, date, and closing are usually indented three inches from the left margin, but can be set anywhere to the right of the middle of the page, as long as all three elements are indented to the same position.