Getting source code for database objects

On pgadmin, when you click on a table or function, you get the source
code (DDL) to create that table or function.

I want to take that and check it into subversion so I have one file for
each table, function, view, etc. My question is, how do you get that
source code? I've been playing with pgadmin and wireshark trying to
figure out what commands or queries it is using to no avail.

Artacus