2. Syntax

nume_ddl_gene = NUME_DDL_GENE (
    ◆/MODELE_GENE = gene_model,
      /BASE = mode_gene/mode_meca,
    # If: exists (" MODELE_GENE ")
        ◇ STOCKAGE =/"LIGN_CIEL" (by default),
                     /"PLEIN ",
        ◇ METHODE =/"INITIAL ",
                    /"CLASSIQUE" (by default),
                    /"ELIMINE ",
    # If: exists (" BASE ")
        ◇ STOCKAGE =/"DIAG ",
                     /"PLEIN" (by default),
        ◇ NB_VECT = int,
)

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