File compression and library utility from 1985.
See this post for an equivalent AMSDOS utility:
https://www.cpcwiki.eu/forum/applications/1995-columbia-v1-2-file-compressor/ (https://www.cpcwiki.eu/forum/applications/1995-columbia-v1-2-file-compressor/)
https://www.youtube.com/watch?v=QcMEgFGdGp4 (https://www.youtube.com/watch?v=QcMEgFGdGp4)
Links:
https://en.wikipedia.org/wiki/CP/M (https://en.wikipedia.org/wiki/CP/M)
https://www.cpcwiki.eu/index.php/CP/M (https://www.cpcwiki.eu/index.php/CP/M)
http://koyado.com/Heathkit/My_Backups_files/NULU15.pdf (http://koyado.com/Heathkit/My_Backups_files/NULU15.pdf)
https://en.wikipedia.org/wiki/LBR_(file_format (https://en.wikipedia.org/wiki/LBR_(file_format))
https://techtinkering.com/articles/compression-and-archiving-on-cpm/ (https://techtinkering.com/articles/compression-and-archiving-on-cpm/)