HP LaserJet 4100 HP PCL/PJL reference (PCL 5 Printer Language) - Technical Ref - Page 303

Table 23-31 EC*c#D, Font ID (assign) EC*c6F, Font Control, Copy Assign EC(#X, Designate Font # as Primary EC)#X, Designate Font # as Secondary PCL Commands LB, Label This command prints text using the currently defined font. Use LB to annotate drawings or create text-only charts. LB text . . . text label terminator Parameter text . . . text Format character Functional Range Default any character(s) no default The LB command includes an automatic pen down function. When the command is completed, the original pen up/down status is restored. z text . . . text- ASCII characters. are drawn using the currently selected font. (Refer to AD, SA, SD, and SS commands for details on specifying and selecting fonts.) You can include non-printing characters such as the Carriage Return (CR, decimal code 13) and Line Feed (LF, decimal code 10). These characters invoke the specified function, but are not drawn. Refer to Appendixes A and B of the PCL 5 Comparison Guide for a list of ASCII characters. The label begins at the current pen location, (unless altered by LO). After each character is drawn, the pen location is updated to be the next character origin. (Refer to "Working With the Character Cell" earlier in the chapter.) EN LB, Label 23-59