Paxar TC6037PR Reference Manual page 109

The first text field sets all the parameters for that field. The second text
field's number of characters and column location changes from what
was defined in the first field. In the third text field, only the column
location is changed. This method can be used on bar code and
constant text fields as well.
Note: You should understand the basics of each field before using this
method.
After you modify any fields or parameters with the optional entry
method, resend the format, batch, or configuration packet to the printer.
W i t h B a r C o d e s
Be careful when rotating or placing a UPC/EAN bar code with human
readable characters, because the bottom reference point is at the
bottom of the bars, not at the bottom of the human readable characters.
W i t h F i e l d s
Data that remains the same for each label should be in a constant text
field. Data that varies for each label should be in a text field.
Check for trailing spaces in text or constant text fields if you receive a
"field off tag" error. An easy way to see trailing spaces is to print the
field in the reverse font.
Make sure if you magnify a field, it does not go off the label or cover
another field. Magnifying a field increases the distance between the
printed character and the edge of the cell.
Printer Optimization 7-5