You may have noticed that when we set the @osuccess message, we 
didn't include any name at the beginning of the message. That's 
because whenever someone uses an exit, the MUD will automatically 
print that person's name before printing the @osuccess.

The @odrop message is seen by people in the destination room whenever
someone uses an exit. In the case of the mountain trail, whenever
someone climbed up the mountain, the people on the mountain top would
see the @odrop. To set this, type something like "@odrop up=emerges
from between the trees, looking no worse for wear." The @odrop is not
seen by the person using the exit; it's only seen by the people who are
already at the destination.

[Read "help t-objects" if you haven't. Otherwise, read "help t-locks".]