gEDA-user: hierarchical gschem examples?

[Eric Blossom <eb@xxxxxxxxxx>]

Can someone please point me at some gschem examples that demonstrate
hierarchy?  I'm particularly interested in multiple instantiations of
subsheets.

Are there any docs on using hierarchy?

My main question is how to name the ports on the subsheet and how to
get them tied back to the sheet symbol in the parent.

Are there tools to generate a sheet symbol from a sheet or a sheet
from a sheet symbol?

Thanks,
Eric