Answer
Using the svn client, you'd use the checkout or co sub command like this to checkout the libdap 'project' code:
svn co https://scm.opendap.org:/svn/trunk/libdap
Using the svn client, you'd use the checkout or co sub command like this to checkout the libdap 'project' code:
svn co https://scm.opendap.org:/svn/trunk/libdap