Using a forms flash on a 3800 printer

A forms flash is a 3800 hardware frame that prints a photographic negative on selected forms. You can use the FLASH parameter (see FLASH) to specify whether the 3800 prints a forms flash. The number of copies to be flashed might be different than the number of copies requested. For example, if the number of copies to be flashed is smaller than the total number of copies requested, the overlay is printed only on the number of copies specified by the FLASH parameter, beginning with the first copy. The following examples show how to use a forms flash on a 3800 printer.

Examples:

In this example, the FLASH parameter is specified in the DD statement and requests that a forms flash named LOGO be printed on 15 copies. Because the total copies requested is only 10, the LOGO forms flash is printed on each copy.
```
//DD1 DD SYSOUT=A,FLASH=(LOGO,15),COPIES=10
```
In this example, 15 copies are requested, but the FLASH parameter specifies only 10 copies in the OUTPUT statement; therefore, the forms flash is only printed on the first 10 copies.
```
//OUT1 OUTPUT FLASH=(LOGO,10)
//DD1 DD SYSOUT=A,COPIES=15,OUTPUT=*.OUT1
```
In this example, the JCL specifies form definition F1UFLASH, a user-created form definition that specifies that a forms flash be used. The FLASH parameter specifies that the forms flash named FL001 is to be used on the first two transmissions of the data set.
```
//OUT2  OUTPUT FLASH=(FL001,2),FORMDEF=UFLASH
//DD2 DD SYSOUT=A,COPIES=3,OUTPUT=*.OUT2
```
If the JCL specifies a form definition that does not specify a forms flash, such as the IBM-supplied form definition F1A10110, PSF ignores the FLASH parameter.