From the introduction:
At the beginning of last summer I got Oriental Adventures, and decided that I would be a lot better off if I could play OA under the 2nd-Edition AD&D rules. So, I decided to go through all of the basics and make the conversions. What follows is my conversion of the OA rules to 2nd-Edition. This is not a replacement for the OA hardback (since I reference it for many spells, proficiencies, abilities, etc.), but simply a summary of the main rules, simplified and with the ability to include some non-OA classes.
The document was published originally in 1994 in an unknown format (probably ASCII on LISTSERV). It was converted to DOC format in 1994 and then revised and republished in DOC format in 1997.