Paxar Monarch 9412 Reference Manual page 26

Define no more than 1000 fields in a format. Each indicates
one field. However, options are not counted as fields. The
actual number of fields a format can have may be less,
because the number of fields is limited by the available
memory.
The field number 0 to 999 must be unique. Monarch
recommends starting at 1, instead of 0.
Do not use a field number more than once per format.
Define all fields in the order you want to image/print them.
The printer does not print in field number order.
Separate all parameters with a Parameter Separator (,).
End each field with a Field Separator ( ).
Enter all information in CAPITAL letters, except words or
phrases within quotation marks.
Include all field parameters unless documented as optional.
Define non-printable text fields before the field to which they
apply.
Define options immediately after the field to which they apply.
Multiple options can be used with most fields. Options can be
used in any combination except as noted with each definition.
Keep in mind that proportionally spaced fonts need wider
fields than monospaced fonts. For variable field data, use a
letter "W" to determine the maximum field size.
Do not place a new line (return) or any other non-printing
character in a character string. However, a carriage return or
line break after each makes your formats easier to read.
T,1,20,V,30,30,1,1,1,1,B,C,0,0,0
T,2,10,V,50,30,1,1,1,1,B,C,0,0,0
Spaces are ignored, except within character strings.
Indenting options improves readability of your formats.
T,1,18,V,30,30,1,1,1,1,B,C,0,0,0
R,42,1
Use a tilde (~) followed by a 3-digit ASCII code in a quoted
string to send function codes or extended characters.
3-4 Configuring the Printer