I-Data 5250 ALLY - Manual (Page 114)

AGILE 5250 ALLY User’s Guide and Reference Page 4-20
25 — BSBOLD1 and 26 — BSBOLD2
Backspace bold. These PFSs are sent to the printer in response to an SCS
Begin Emphasis command, or when a character-Backspace-same
character sequence or a text-Carriage Return-same text sequence is
detected in the data stream. PFS 25 and PFS 26 are used only for printers
that are otherwise incapable of bold printing. If Option 51 — Bolding is set
to 01 (!AGILE!51=01;), the 5250 ALLY will perform the following
sequence of operation for each character that is to be printed bold.
1. The character to be printed bold is sent to the printer to be “struck”
the first time.
2. PFS 25 — BSBOLD1 is sent to the printer. It should backspace one
character, then perform a small offset to the right. The small offset
is so that the first and second “striking” of the character are not
directly on top of each other — which would not perform bolding
on laser printers.
3. The character is sent a second time.
4. PFS 26 — BSBOLD2 is sent to the printer. It should perform a
small offset to the left of the same distance that PFS 25 —
BSBOLD1 offset to the right. This will place the print position at
the printer at the same place it was before step 2.
27 — UNDL ON
If Option 53 — Underline has been set to 00 (!AGILE!53=00;), this PFS
will be sent to the printer to turn on underline mode. This can be the result
of a direct System request for underlined text as a response either to an
SCS Word Underscore command or an SCS Begin Underscore command,
or if the System sends Underscore characters in a second pass through the
line (with a character-Backspace-Underscore sequence or a text-Carriage
Return-Underscore sequence).
28 — UNDLOFF
If Option 53 — Underline has been set to 00 (!AGILE!53=00;), this PFS
will be sent to the printer to turn off underline mode. This is sent to the
printer in response to an SCS End Underscore command, at the end of the
word to be underlined in response to an SCS Word Underscore command,
or after Underscore characters sent by the System in a second pass through
the line (with a character-Backspace-Underscore sequence or a text-
Carriage Return-Underscore sequence) have terminated.