2. Syntax

interspectrum = DEFI_INTE_SPEC (
    ◇ DIMENSION = int (default: 1),
    ◆/PAR_FONCTION = _F (
           ◆/NOEUD_I = no,
             /NUME_ORDRE_I = int,
           # If: exists (" NUME_ORDRE_I ")
               ◆ NUME_ORDRE_J = int,
           # If: exists (" NOEUD_I ")
               ◆ NOEUD_J = no,
               ◆ NOM_CMP_I = text,
               ◆ NOM_CMP_J = text,
           ◆ FONCTION = function_c/function,
        ),
      /KANAI_TAJIMI = _F (
           ◆/NUME_ORDRE_I = int,
             /NOEUD_I = no,
           # If: exists (" NUME_ORDRE_I ")
               ◆ NUME_ORDRE_J = int,
           # If: exists (" NOEUD_I ")
               ◆ NOEUD_J = no,
               ◆ NOM_CMP_I = text,
               ◆ NOM_CMP_J = text,
           ◇ FREQ_MIN = float,
           ◇ FREQ_MAX = float (default: 100.0),
           ◇ PAS = float (default: 1.0),
           ◇ AMOR_REDUIT = float (default: 0.6),
           ◇ FREQ_MOY = float (default: 5.0),
           ◇/VALE_R = float,
             /VALE_C = complex,
           ◇ INTERPOL =/"LIN" (by default),
                        /"LOG ",
           ◇ PROL_DROITE =/"CONSTANT ",
                           /"LINEAIRE ",
                           /"EXCLU" (by default),
           ◇ PROL_GAUCHE =/"CONSTANT ",
                           /"LINEAIRE ",
                           /"EXCLU" (by default),
        ),
      /CONSTANT = _F (
           ◆/NUME_ORDRE_I = int,
             /NOEUD_I = no,
           # If: exists (" NUME_ORDRE_I ")
               ◆ NUME_ORDRE_J = int,
           # If: exists (" NOEUD_I ")
               ◆ NOEUD_J = no,
               ◆ NOM_CMP_I = text,
               ◆ NOM_CMP_J = text,
           ◇ FREQ_MIN = float,
           ◇ FREQ_MAX = float (default: 100.0),
           ◇ PAS = float (default: 1.0),
           ◇/VALE_R = float,
             /VALE_C = complex,
           ◇ INTERPOL =/"LIN" (by default),
                        /"LOG ",
           ◇ PROL_DROITE =/"CONSTANT ",
                           /"LINEAIRE ",
                           /"EXCLU" (by default),
           ◇ PROL_GAUCHE =/"CONSTANT ",
                           /"LINEAIRE ",
                           /"EXCLU" (by default),
        ),
    ◇ TITRE = text,
    ◇ INFO =/1 (by default),
             /2,
)

◆: mandatory
◇: optional
: present by default
&: together
/: only one among
|: several possible choices