Program Frameworks
******************

The modules described in this chapter are frameworks that will largely
dictate the structure of your program.  Currently the modules
described  here are all oriented toward writing command-line
interfaces.

The full list of modules described in this chapter is:

* "turtle" — Turtle graphics

  * Introduction

  * Overview of available Turtle and Screen methods

    * Turtle methods

    * Methods of TurtleScreen/Screen

  * Methods of RawTurtle/Turtle and corresponding functions

    * Turtle motion

    * Tell Turtle’s state

    * Settings for measurement

    * Pen control

      * Drawing state

      * Color control

      * Filling

      * More drawing control

    * Turtle state

      * Visibility

      * Appearance

    * Using events

    * Special Turtle methods

    * Compound shapes

  * Methods of TurtleScreen/Screen and corresponding functions

    * Window control

    * Animation control

    * Using screen events

    * Input methods

    * Settings and special methods

    * Methods specific to Screen, not inherited from TurtleScreen

  * Public classes

  * Help and configuration

    * How to use help

    * Translation of docstrings into different languages

    * How to configure Screen and Turtles

  * "turtledemo" — Demo scripts

  * Changes since Python 2.6

  * Changes since Python 3.0

* "cmd" — Support for line-oriented command interpreters

  * Cmd Objects

  * Cmd Example

* "shlex" — Simple lexical analysis

  * shlex Objects

  * Parsing Rules

  * Improved Compatibility with Shells
