How to address envelopes with attn<br>Write " attn " followed by the name of the recipient. The " attn " line should always appear at the very top of your delivery address, just before the name of the person you're sending it to. Use a colon after " attn " to make it clearly readable.
Envelopes were first developed in the 17th century.
( z1 develop :ARG1 ( z2 envelope ) :ord ( z3 ordinal-entity :value 1 ) :time ( z4 date-entity :century 17 ) )