Epson 1000 Reference Manual page 210

ESC &1 # P sets the page length and paper size. The paper sizes
available with this command are Letter, A4, Legal, and
Executive.
The following commands are available in 3/P/Si emulation but
not in LJ-2P emulation:
ESC &a#P
ESC *b#Y
ESC *rC
ESC *r#T
ESC *r#S
ESC *v#T
ESC *v#N
ESC *v#O
ESC %#B
ESC *c#K
ESC *c#L
ESC *c#T
ESC *c#X
ESC *c#Y
Print direction
Raster Y offset
End raster graphics (Version C)
Raster graphics height
Raster graphics width
Select pattern
Select source transparency mode
Select pattern transparency mode
Enter GL/2 mode
Plot horizontal size
Plot vertical size
Set picture frame anchor point
Picture frame horizontal size
Picture frame vertical size
HP Emulation Mode B-33