Specifies whether data being stored into a USAGE COMP, USAGE BINARY or USAGE COMP-4 item is to be truncated to the size given by the item's PICTURE clause or to the maximum size the item can hold. 
Syntax:
>>-.---.-.-------TRUNC--"method"-.---------><
   +-/-+ +.----.-TRUNC-----------+
          +-NO-+
Parameters:
- 
method
- One of: 
- TRUNC 
- Truncate in decimal to the number of digits given by the PICTURE clause, on all stores into COMP, BINARY and COMP-4 items. 
- NOTRUNC 
- Truncate in binary to the capacity of the allocated storage, on all nonarithmetic stores into COMP, BINARY and COMP-4 items. 
- TRUNC"ANSI" 
- Truncate in decimal to the number of digits given by the PICTURE clause, on nonarithmetic stores into COMP, BINARY and COMP-4 items. On arithmetic statements that cause the size error condition and that have no ON SIZE ERROR phrase, the result is undefined. 
 
Properties:
| Default: | TRUNC"ANSI" (Dialect) (Dialect) | 
| Phase: | Syntax check | 
| $SET: | Initial | 
 
Dependencies:
Set to TRUNC"ANSI" immediately by NORM. 
Set to NOTRUNC immediately by RM or RM"ANSI".