13.1 Ports

      13.1.1 Encodings and Locales

      13.1.2 Managing Ports

      13.1.3 Port Buffers and Positions

      13.1.4 Counting Positions, Lines, and Columns

      13.1.5 File Ports

      13.1.6 String Ports

      13.1.7 Pipes

      13.1.8 Structures as Ports

      13.1.9 Custom Ports

      13.1.10 More Port Constructors, Procedures, and Events

        13.1.10.1 Port String and List Conversions

        13.1.10.2 Creating Ports

        13.1.10.3 Port Events

        13.1.10.4 Copying Streams

    13.2 Byte and String Input

    13.3 Byte and String Output

    13.4 Reading

    13.5 Writing

    13.6 Pretty Printing

      13.6.1 Basic Pretty-Print Options

      13.6.2 Per-Symbol Special Printing

      13.6.3 Line-Output Hook

      13.6.4 Value Output Hook

      13.6.5 Additional Custom-Output Support

    13.7 Reader Extension

      13.7.1 Readtables

      13.7.2 Reader-Extension Procedures

      13.7.3 Special Comments

    13.8 Printer Extension

    13.9 Serialization

      13.9.1 Serialization Structures

    13.10 Fast-Load Serialization

    13.11 Cryptographic Hashing