special feautures of business letters after complimentary close

reference initials come a QS after this, this is keyed a DS after the complementary close

company name

both methods to indicate multiple enclosure notations

making the enclosure notation plural and adding a number to indicate number of enclosures/enclosures followed by a colon, two spaces, then listing the enclosures

keyed a SS following the delivery notation or last special feature, signifies if and who else will be getting a copy of the letter, noted by cc: name of receiver

copy notation

follows the same indentation pattern as body paragraph, a DS below last part to emphasize or place a thought. PS:parting thought

postscript notation