HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

23-10 The Character Group EN
The Define Variable Text Path (DV) command allows you to specify
the text path (right, left, up, or down) and the direction of Line Feeds
with respect to the text path.
Figure 23-3 Define Variable Text Path Command
The Label Origin (LO) command simplifies placing labels on a
drawing. Normally, the first character origin is the current pen location
when the Label command is issued. The LO command allows you to
specify that the label be centered and/or right- or left-justified from the
current pen location. For example, the following illustration shows four
centered lines of text.
Figure 23-4 Label Origin Command