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

EN PG, Advance Full Page 19-33
PG, Advance Full Page
This HP-GL/2 command is ignored by the printer since it could
cause undesirable results when importing plots. A page eject can
be accomplished only from the PCL printer language mode.
The following PCL commands cause a conditional page eject,
meaning that a page is ejected if there is any printable data in the
print buffer:
z
E
C
E Reset
z UEL (Universal Exit Language)
z Flush All Pages
z Page Length
z Page Size
z Orientation
z Paper Source
When a page is ejected using one of the above commands, the PCL
cursor position is set to the top of form on the new page. (The Top of
Form is 3/4 of a line below the top margin.)
An alternative method of ejecting a page from PCL is the Form Feed
control code. A Form Feed causes an unconditional page eject and
advances the current active cursor position to the top of form on the
next page. The horizontal cursor position remains the same as before
the page eject.
Note The HP-GL/2 pen position is not affected by a Form Feed; it occupies
the same position on the next page.