| A | B |
| business letter | form of communication used to convey a formal message to one or more parties |
| letterhead | contains preprinted info in the header and sometimes footer |
| dateline | required component - the date the letter was wirtten |
| attention line | optional component - keyed on first line of inside address and used to address person or job within an organization |
| inside address | required component - name and address of the addressee (person letter is going to) |
| salutation | required component - the greeting |
| subject line | optional component - keyed below salutation |
| message | required component - letter content |
| complimentary close | required component - the goodbye |
| company signature | optional component - keyed name of the company in all caps |
| writer's signature block | required component - author's name and title |
| reference initials | optional component - initials of the typist of the letter (no punctuation is used) does not have to be included in author and typist are same person |
| enclosure notation | optional component - indicates that another document is included with the letter |
| copy notation | optional component - indicates the names of other parties who have received copies of the letter |
| mixed punctuation | (standard) means that a colon is keyed after the salutation (Dear Mr. Smith:) and a comma after the complimentary close (Sincerely |
| open punctuation | means that no punctuation is used after the salutation or the complimentary close |
| block style | all lines begin at the left margin |
| modified block style | the date and closure are keyed at center point (usually 6 tabs) |