
  - To add a new function to the language:

     - Add it to the index of PPL.Y
     - Add it in the fonctions of PPL.Y
     - Add it in ARRAYS.H
     - Add a definition in FUNCS.H
     - Add a definition in EXEC.H
     - Add 1 to the #define MAXFUNCS int EXEC.H
     - Create function body in FUNCS.C

  - To add a new procedure to trhe language:

     - Add it in ARRAYS.H
     - Add 1 to the #define MAXPROCS in ARRAYS.H
     - Add a definition in PROCS.H
     - Add a definition in EXEC.H
     - Add 1 to the #define MAXPROCS in EXEC.H
     - Create procedure body in PROCS.C
