I think UPC would not be best for this.  The wand will do 3of9, so I'd try that.  From the looks of the code and the requirements, you should be able to put roughly the same amount of data on a page using 3of9 as you can with text.  If you can encode the line feeds in the stream as a char and not require a newline in the codes, you can maximize the paper and maybe get 1.5x to 2x the density.

Jim



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