This is probably totally irrelevant to your needs, but............
I did some work for Harcourt in Orlando back in 1999 when UPS got into 
MaxiCode and required Harcourt to comply. I had to learn the IGP/PGL
printer language...not fun. The printers were in TX, so I had to work
very closely (via phone)  with the TX guy who knew the printer pretty
well and could help me out with what was actually printing compared to
what I thought I was sending to the printer. I don't know how I would
have gotten it done without his help.
 
Getting those codes right was a chore. I'd create the label, view the
spooled file checking the codes interspersed with text and then ask the
guy in TX to print and fax me the results. Many times, he's just eyeball
it and tell me what was happening. There was some kind of xref table, I
think, that I could look at to see what I should send.
 
The following is an example from a manual. 
 
~CREATE;MAXI (Enter Create Form Mode)
BARCODE (New Bar Code command)
MAXICODE;DARK;32;54
(Vertical Dark MAXICODE at SR 32, SC 54)
*[)>|n01|m97841706672|m840|m001|m1Z12345675|mUPSN|m12345E|m0
89|m|m1/1|m10.1|mY|m|m|mUT|n|$*
(Data Field * all on one line
PDF;A (Upper Data Field)
STOP (Ends Bar Code command)
END (Terminates Create Form Mode)
~EXECUTE;MAXI;1 (Execute the form, form count of 1)
 
Don't remember what model or much else. Maybe you could contact someone
at Harcourt to see which printers they are using these days.
 
 
Fran Denoncourt
Sr. Programmer/Analyst
Pinal County Treasurer's Office
Florence, AZ 85232
(520) 866-6404
Receipt of this message does not grant you permission to send me 
Unsolicited Commercial Email
Adam West <adamster@xxxxxxxxx> 05/15/2008 11:27 AM >>>
Paul, About this text to send over, is it a matter what type of fields
should    
these be defined as on the Iseries? Is it a simple eval =, or is this a
need for 
biton, bitof etc.                                                      
         
                                                                       
         
                                                                       
         
                                                                       
         
DO you perhaps have a code line sample of this?                        
         
                                                                       
         
                                                                       
         
                                                                       
         
--- On Thu, 5/15/08, Paul Tykodi <ptykodi@xxxxxxxxx> wrote:            
         
                                                                       
         
  From: Paul Tykodi <ptykodi@xxxxxxxxx>                                
         
  Subject: Re: Printing a Bar code on Printronix 4280                  
         
  To: midrange-l@xxxxxxxxxxxx                                          
         
  Date: Thursday, May 15, 2008, 5:15 PM                                
         
                                                                       
         
Hi Adam,                                                               
        
The VGL programmer's reference for the P5000 class of printer is
available      
for download from the Printronix web site (
http://www.printronix.com).
It       
includes examples of the text needed to activate the resident bar code 
        
functionality in a Printronix matrix printer. Where the P4280 is a
retired      
model, I don't know whether it supports building the UPSSHIP bar code
or        
not.                                                                   
        
Best Regards,                                                          
        
/Paul                                                                  
        
-- Paul Tykodi                                                         
        
Principal Consultant                                                   
        
TCS - Tykodi Consulting Services LLC                                   
        
                                                                       
         
E-mail: ptykodi@xxxxxxxxx                                              
        
                                                                       
         
date: Wed, 14 May 2008 12:05:29 -0700 (PDT)                          
        
from: Adam West <adamster@xxxxxxxxx>                                 
        
subject: Printing a Bar code on Printronix 4280                      
        
                                                                     
        
HI I am trying to print a barcode field from an AS/400 RPG program to
a       
                                                                       
         
 Printronix P4280 printer. We use the E-Twinax as the Controller. If 
        
there                                                                  
        
 is anyone here who has done this successfully, I would be very      
        
interested                                                             
        
 in hearing what steps are needed to accomplish                      
        
this.                                                                  
        
                                                                     
        
                                                                     
        
 I believe that I need to use the Printronix language VGL to send
codes       
to                                                                     
        
 it, that will tell it that  a bar code field exists. THe application
        
is                                                                     
        
 for UPS shipping. By hav ing a bar code field on the printout the   
        
operator                                                               
        
 can then scan this and get associated information to populate the   
        
screen.                                                                
        
                                                                     
        
 Any help would be so                                                
        
appreicated,                                                           
        
                                                                       
         
                                                                       
         
                                                                       
         
                                                                       
         
                                                                       
         
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