Process for the input data set or file

Each data set you specify is processed as follows:

If you specify a file, the data sets within the file concatenation are allocated and printed separately. They are treated as if you had specified a list of data sets to be printed. After the system prints the file, it does not deallocate the file.
PRINTDS examines the first line of the data set to determine whether Document Composition Facility (DCF) formatted the data in the data set. If so, the first line is of the following form and PRINTDS extracts device and font information from it. examines the first line of the data set and extracts the device and font information from that line, such as:
```
SCRIPT/VS Rx.x.x;  DEVICE device CHARS font1 (… font4)
```
If PRINTDS finds page mode data in the data set, the device and font information will not be extracted.

PRINTDS associates the specified font information with the SYSOUT data set. If you specify the CHARS operand on the PRINTDS command, the system uses the values specified on the CHARS operand when it allocates the SYSOUT data set rather than the values from the DCF data set.