| A | B |
| block format | all lines begin at the left margin |
| modified block format | return address, date, and complimentary close begin at center |
| personal business letter | written communication between a person and a business organization |
| return address | sender of the letter (street, city, state, ZIP) |
| letter address | to whom the letter is being sent |
| salutation | greeting |
| body of letter | message |
| complimentary close | farewell |
| name of writer | originator of message |
| enclosure notation | if something else is being sent with the letter |
| open punctuation | no colon after salutation; no comma after complimentary close |
| closed punctuation | colon after salutation; comma after complimentary close |
| envelope return address | upper left corner |
| mailing address | block style, all caps, no punctuation |
| No. 10 | standard business envelope |
| No. 6 3/4 | small business envelope |
| modified block | date, complimentary close, and signature lines begein at the centerpoint |
| letterhead | business stationery that includes the company logo, company name, address, telephone & fax numbers |
| attention line | used to direct a letter to a particular person in a business and is the first line of the letter/envelope address |
| Ladies and Gentlemen | salutation of a letter using an attention line |
| subject line | keyed in all caps a double space below the salutation alerts the reader to the overall topic of the letter |
| postscript | highlights added information in a letter and is keyed a double space below the last line of a letter |
| second page heading | individual/company name, Page 2, Current Date |
| reference initials | indicates who keyed the letter other than the writer |