The repository is named after the official ISO-639-3:2007 language
code for Polish language.

It is intended to contain various scripts and data related to
historical Polish.

At the moment it contains script used to normalize texts, in paricular
modernizing the spelling.

Note: according to the presentation of November 9th, 2018
(https://youtu.be/yWa4O7YZPYU?t=269) Emanuel Modrzejewski
substantially extended the rules for the KorBa project