The spell files included here are in Vim's special format. You can't edit them. See ":help spell" for more information. Copyright The files used as input for the spell files come from the OpenOffice.org spell files. Most of them go under the LGPL or a similar license. Copyright notices for specific languages are in README_??.txt. Note that the files for different regions are merged, both to save space and to make it possible to highlight words for another region different from bad words.