[edub]

The program was written in 1988. I ran the text through LZSS which was published in 1982, so was available before 1988. I used a 1989 public domain version by Haruhiko Okumura, which is after 1988, but I don't believe it is optimized to improve upon the compression level of the 1982 algorithm.

It took it from 2357 bytes to 534 bytes, which is smaller than the Xmas.c program which I counted as 917 bytes, but another poster counted 913 bytes.