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Building:

 * Improve cleaning to get back to the original state.

 * Separate cleaning of documentation and executables.

 * Go to autoconf.

 * Libraries:
    - Make shared libraries.
    - Make both shared and archive libraries (now this is either shared or
      archive).
    - Make the library dependencies on include files.

 * Insert INTER

 * Introduce copyleft protection.

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Sources:

 * Change the name of gag.dico.gbl into gagrc file.

 * Creation of a GILDAS_PATH where loadable executables (and some
   configuration files) would be search instead of PATH.

 * Right now a global init file is read for gildas. An init file per
   package should be read instead (could that be a problem for tasks?).

 * mapping:
    - Cleaning of the library and the tasks is needed.

 * Avoid redundancy of source codes in tasks.

 * Make the demo files also usable as automatic,blind tests.

 * Logical names:
    - Logical name GREG_FONT should be changed in GAG_FONTSET.
    - There should be a logical path (instead of a logical variable) for 
      at least DEMO#DIR: (and perhaps HELP#DIR: and DOC#DIR:)
    - Is GAG_UTIL still used?

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Documentation:

 * tex files made from hlp files have a lot's of white space at their end.
   This should be solved.

 * Update documentation to reflect all the changes!

 * Think about new format for documentation source (requirement: being able
   to produce at least ps, pdf, html from the source).

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