Epson 1500 - 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 Print direction
ESC *b#Y Raster Y offset
ESC *rC End raster graphics (Version C)
ESC *r#T Raster graphics height
ESC *r#S Raster graphics width
ESC *v#T Select pattern
ESC *v#N Select source transparency mode
ESC *v#O Select pattern transparency mode
ESC %#B Enter GL/2 mode
ESC *c#K Plot horizontal size
ESC *c#L Plot vertical size
ESC *c#T Set picture frame anchor point
ESC *c#X Picture frame horizontal size
ESC *c#Y Picture frame vertical size
HP Emulation Mode B-33