[pgadmin-support] Database connections

[George Weaver]

In pgAdmin II, if I understand it correctly, the program determines the databases present on the server using pg_Database when the user selects Connect.  I assume that the program then connects to a specific database when one is chosen by the user from the database tree.    As far as I can tell, this is done without using a User, System, or File DSN.    Can you direct me to a source of information or documentation which describes how this is accomplished?   Thanks for you help (and a super product!)   George