Compuprint 4247-Z03 Programmer Manual - Manual (Page 161)

An OVS command with a bypass value of 00 ends overstrike mode.
Underscore (USC)
2BD3 05 76 (77) P1-P3
Description: This control identifies text the printer underscores at the baseline of the current line. The
underscore prints using the same print quality as the text.
Parameter P1 is the bypass identifier. This parameter controls underscoring of white space, depending on
its value, as shown:
Bits 0-3
Reserved
Bit 4
0 Underscore white space from Relative Move Inline
1 Bypass white space from Relative Move Inline
Bit 5
0 Underscore white space from Absolute Move Inline
1 Bypass white space from Absolute Move Inline
Bit 6
0 Underscore white space from Space or Variable Space Character
1 Bypass white space from Space or Variable Space Character
Bit 7
0 Bypass Treat Bits 0-6 according to their set values
1 No Bypass Treat Bits 0-6 as if their values were set to 0.
X'FF'
No bypass in effect.
Note: If bit 7 is on, the printer treats all other bits in byte P1 as zeros, regardless of their values.
A USC command with a bypass value of 00 ends underscore mode.
Temporary Baseline Move (TBM)
2BD3 03 or 06 78 (79) P1-P4
Description: This control changes the position of the sequential baseline without change to the
established baseline. This control also stops and starts both subscript and superscript printing.
Parameter P1 is the direction parameter. Its values are:
00 Do not change baseline
01 Return to established baseline
02 Shift baseline away from the I axis (subscript) one additional temporary baseline
increment, per parameters P3 and P4
03 Shift baseline towards the I axis (superscript) one additional temporary baseline increment,
per parameters P3 and P4.
Parameter P2 is the precision parameter. Its values are:
00 Baseline shift is not simulated and the active font is used.
Chapter 4. IPDS Programming Information 141