"The protonation state of N- and C-termini can be chosen interactively",
"with the [TT]-ter[tt] flag. Default termini are ionized (NH3+ and COO-),",
- "respectively. Some force fields support zwitterionic forms of isolated",
- "amino acids, but for polypeptides these options should NOT be selected.[PAR]",
+ "respectively. Some force fields support zwitterionic forms for chains of",
+ "one residue, but for polypeptides these options should NOT be selected.[PAR]",
"The separation of chains is not entirely trivial since the markup",
"in user-generated PDB files frequently varies and sometimes it",