[mysql] replication of database structure changes

[Jim]

Hi List,

Do changes in database structure replicate to the slaves from the master?  Is 
there a document somewhere in the manual (I have not found one) that explains 
what gets replicated and what does not?  Specifically, does an ALTER TABLE 
get replicated?  There is some mention that replication is for data and not 
for structure, but a formal explanation of what exactly that means is hard to 
find.

Thanks again.

Jim N.