5511 – Permissible Appellant and Respondent.

§ 5511. Permissible appellant and respondent.  An aggrieved party or a
  person  substituted  for  him may appeal from any appealable judgment or
  order except one entered upon the default of  the  aggrieved  party.  He
  shall  be  designated  as  the  appellant  and  the adverse party as the
  respondent.