This is the editor provided by EPSON for their ePOS XML format used to programatically print on their printers.
I've downloaded this editor from EPSON's support page at https://c4b.epson-biz.com/modules/pos/index.php?page=single_soft&cid=6558&scat=47&pcat=52
I'm not the author of any of the files in this repository.
All rights reserved to the original authors.