Epson 1500 - Manual (Page 185)

SUB CONFIG.
In HP emulation, the SUB CONFIG. option includes two
submenus.
Menu/submenu
SUB CONFIG.
Available options
F O R M
SYMSET
FORM-Use the FORM option to set the number of lines for the
selected paper size and orientation. The setting you choose also
changes the line spacing. This setting is affected by the PAGE
SIZE, ORIENT., and FONT settings. If you select 0, the line
spacing changes to 1/6-inch.
Menu/submenu Available options
FORM 64LINES 0 through 128 or ***
If *** appears on the display, the number of lines you selected
is out of the possible range of 0 to 128.
SYMSET-Use the SYMSET option to choose from 26 (LJ-2P
emulation) or 40 (3/P/Si emulation) resident HP symbol sets.
In most cases, you will not change this setting.
In the following table, the options in the right column are
available only with scalable fonts.
B-8 HP Emulation Mode