Paxar 9402 Reference Manual page 196

To pre-image a label:
1. Send the format and a batch header in one file. The first time
you send the batch header, use the parameter N (new batch),
and the parameter 0 for (zero quantity).
Example
The printer images constant text, line, box, and graphic fields, but
does not print them.
2. Input data for each field, and send it with a batch header
using the parameter U (update) and a quantity of zero. When
the printer receives the data, it immediately images the field,
but does not print it.
Example
At this time, the printer is imaging all associated fields, including
fields that copy from other fields.
3. Repeat step 2 for each field except the last one.
4. For the last field, input data and send it with the quantity of
labels you want printed. When the printer receives input for
the last field, it immediately prints the labels.
Example
9-4 Printer Optimization
{B,1,N,0 p }
{B,1,U,0 p
1,"RODGER DIST CTR" p }
{B,1,U,0 p
2,"8292" p }
{B,1,U,0 p
3,"BROADWAY" p }
{B,1,U,0 p
4,"555 WEST OAK AVE." p }
{B,1,U,10 p
5,"DAYTON, OHIO" p }