Epson 1010 User Manual page 119

This example of a character definition program should make this
clear:
10 LPRINT CHR$(27)"X0"
20 LPRINT CHR$(27)"&"CHR$(0);
30
LPRINT "@@";
40 LPRINT CHR$(1)CHR$(9)CHR$(1);
50 FOR
I=1 TO 27
60 READ A: LPRINT CHR$(A);
70 NEXT I
80 LPRINT "@@@@@"
90 LPRINT CHR$(27)"%"CHR$(1);
100 LPRINT "@@@@@"
110 LPRINT CHR$(27)"%"CHR$(0);
120 LPRINT "@@@@@"
130 END
140 DATA
150
DATA
160
DATA
In line 10, the ESC x0 command selects draft printing.
The actual character definition starts in line 20. The two @ signs in
line 30 represent n1 and n2, the range of characters being defined (in
this case, a range of 1). Line 40 contains d0, d1, and d2.
The information about the actual character design (which is
contained in the DATA statements at the end of the program) is sent
to the printer in the loop between lines 50 and 70.
Note: When defining Letter Quality or proportional characters,
put a WIDTH statement in your program to prevent carriage
return and line feed codes from interfering with your definitions.
1,0,0,2,0,0,4,0,0
8,0,0,23,255,240,8,0,0
4,0,0,2,0,0,1,0,0
Software and Graphics 4-23