| A | B |
| Block Letter Style | All lines begin at the left margin |
| Dateline placement | Vertical placement varies according to leter length. |
| Letter address | The address is always started a QS below the dateline. |
| Salutation | Placed a DS below the letter address. |
| Subject Line | Identifies the topic of the letter. |
| Body | Begins a DS below the salutation. |
| Complimentary Close | Place a DS below the last line of the body. |
| Writer's name and title | Placed a QS below the complimentary close. |
| Reference initials | Keyed a DS below the writer's name or title. |
| Enclosure notation | Used when something other than the letter is to be included in the envelope. |
| Copy notation | Used when the copy of the letter is to be sent to someone other than the addressee. |