prepending data ( 2lines of code) to sna code from ibm Z

[dustdust]

from an IBM Z operating system mainframe, thay pass down sna code to an IBM 3174 controller and then it is printed on an HP pcl printer. I need to insert a pcl macro or just two simple lines of code before the file. The code could be simple like this. Any ideas?

abc 123
run abc123