trade -- offer a swap (item for item, or item for cash)
give is one-way. trade is two-sided: you name what you hand over and (optionally) what you want back. Live players type trade accept. An offline Echo completes the swap at once when echo trade allows you (they cannot type accept while detached).
How you play
1. Stand in the same room
2. trade offer salt packet to ash
or trade offer salt packet for 5 to ash
or trade offer salt packet for knife to ash
3. They type trade accept -- or trade decline
4. trade cancel drop an offer you made
Echo policy: echo trade off|friends|anyone (default off). Clinic haul is not this loop.
See also: help give | help pay | help echo | help carry