IBM DOS/VS COBOL allows the following form of the ADVANCING clause in a Format 1 WRITE statement:
     {BEFORE}  ADVANCING  {identifier-2 LINES}
     {AFTER }             {integer LINES     }
                          {special-name      } 
            	 The special-name option is the only one that is not also in ACUCOBOL-GT. The special-name is one of the following special names, or a mnemonic for it defined in the SPECIAL-NAMES paragraph:
| Special Name | Equivalent | 
|---|---|
| CSP | 0 LINES | 
| C01 | PAGE | 
| C02 | none | 
| C03 | none | 
| C12 | none | 
| S01 | none | 
| S02 | none | 
| S05 | none | 
Only CSP and C01 are implemented in ACUCOBOL-GT in the IBM DOS/VS COBOL compatibility mode. The others depend on particular hardware features and cannot be ported. They will generate error messages.