Compuprint MDP 30FB Programmer's Manual page 43

m Character Height
3
0 No change
1 Standard character height
2 Double character height
16 Character height unchanged Normal line feeds
17 Standard character height
18 Double character height
32 Character height unchanged Double line feeds
33 Standard character height
34 Double character height
m specifies the character width. Only the low-order half-byte is significant in this
4
mode byte. The high-order half-byte is ignored.
m Character Width
4
0 No change
1 Standard width character
2 Double width character
Line Spacing
No change
Line feeds unchanged
Line feeds unchanged
Normal line feeds
Normal line feeds
Double line feeds
Double line feeds
Line Spacing
No change
No change
No change
41