— function: additional-representation-by-attributes imol chain_id resno_start resno_end ins_code representation_type bonds_box_type bond_width draw_hydrogens_flag

Where:

• imol is an integer number
• chain_id is a string
• resno_start is an integer number
• resno_end is an integer number
• ins_code is a string
• representation_type is an integer number
• bonds_box_type is an integer number
• bond_width is a number
• draw_hydrogens_flag is an integer number

return the index of the additional representation.

Returns: -1 on error.