prettify_sequence_output.RdDisplays a sequence in a line in group of 10 (by default,
configurable with sequence_group_length AG option), each group numbered.
Prepends it with sequence length and chain name, if applicable.
prettify_sequence_output(name, sequence)[character(1)]
Chain name. If not applicable, use NA.
[character(1)]
Amino acid sequence.
A single string with multiple lines (probably 3 or 4).