| A | B |
| letterhead | preprinted company name, address, telephone/FAX numbers, |
| attention line | used to route a letter to a specific person within a company |
| letter address | receiver of letter |
| salutation | greeting |
| subject line | alerts reader about topic of letter |
| body | message of letter |
| complimentary close | farewell |
| reference initials | indicates keyboard operator |
| enclosure notation | used when something else is being sent with the letter |
| name of writer | sender of letter |
| postscript | closing sentence used for emphasis |
| business letter | "ambassador" of a company |
| open punctuation | no colon after salutation; no comma after complimentary close |
| closed punctuation | colon after salutation; comma after complimentary close |
| block style | all lines begin at left margin |
| modified block style | date/ closing lines begin at center |