Resrenumber assigns new residue numbers to residues with any atom in atom-spec. It is the command version of Renumber Residues. The specified residues from each chain will be renumbered starting from the integer start. In other words, numbering will start over for each chain rather than incrementing from the previous chain.
If the renumbering would produce one or more duplicate residue numbers within a chain, an error message will appear and the numbering will not be applied.
See also: changechains, write