1 COMMON
 The COMMON statement defines a named, shared storage area called a  COMMON
 block  or  program  section (PSECT).  BASIC program modules can access the
 values stored in the COMMON by specifying a COMMON with the same name.

 Example

 COMMON (sales_rec) DECIMAL net_sales (1975 TO 1985) 

2 Syntax

 { COM    }  
 { COMMON } [ ( com-name ) ] { [ data-type ] com-item },...

  com-item: { num-unsubs-var-name                                }
            { num-array-name ([int-const1 TO] int-const2,...)    }
            { str-unsubs-var-name = int-const                    }
            { str-array-name ([int-const1 TO] 
              int-const2,...) [=int-const]                       }
            { FILL [(int-const)] [=int-const]                    }
            { FILL% [(int-const)]                                }
            { FILL$ [(int-const)] [=int-const]                   }