This is a checkout from the openforce CVS. I couldn't figure out the one at openacs.org
vs -z3 -d :pserver:mailto:anonymous@openacs.org:/cvsroot checkout -r oacs-4-6 acs-core
and
cvs -z3 -d :pserver:mailto:anonymous@dotlrn.openforce.net:/dotlrn- cvsroot co dotlrn-core