DESIGN

This file describes the overall design of efunge.

Modules:
* efunge         - Handles command line arguments and startup.

* efunge_fingerindex   - Looks up loading fun for a fingerprint. Should only be
                         used by efunge_fingermanager. Automatically generated
                         by tools/gen_fprint_list.sh.
* efunge_fingermanager - Handles loading and unloading of fingerprints, and
                         executing fingerprint instructions.
* efunge_fingerstack   - Implements fingerprint instruction stacks (used in
                         efunge_fingermanager).
* efunge_fungespace    - Funge space.
* efunge_input         - STDIO in the Funge way. Is a gen_server.
* efunge_interpreter   - Handle core instructions, main loop.
* efunge_ip            - IP functions, like: reverse, turn, finding next
                         non-space, wrapping. In future also things like getting
                         and setting fingerprint specific data.
* efunge_stack         - Funge stack.
* efunge_stackstack    - Funge stack-stack.
* efunge_sysinfo       - Implements y.
* fingerprints/        - Fingerprints should be in this subdirectory.
                         One fingerprint per file. The spec files are in the
                         same format as for cfunge. See documentation of it
                         included with cfunge.

Process dictionary:
* The process dictionary got two uses currently:
  - Command line arguments for the program (as reported by y).
  - Funge-Space bounds.
* Note that the module random (which is used in efunge) from STDLIB also uses
  the process dictionary.