If the printer file is associated with the spool file type at generation, the system resource name (systemName property) identifies the node, user or external writer identifier, and class that you want to spool the file.
nodeid.userid.class
Refer to the CICS customization manual for more information. The spool file is opened as needed on print statements and closed on close statements for a print form, or when recoverable resources are committed (sysLib.commit(), sysLib.rollback(), or end of transaction or segment).