My draft, half-baked, not duly prepared notes

Untranslated (yet?) notes in Russian language marked with "RU" suffix in filename. Of course, these are in UTF-8 encoding.

.org-files - Emacs org-mode format.

I would be very grateful for (early) feedback on my notes. Please tell me about any bugs, mistakes, typos, etc. This is very important for me.

 Name                         Last modified      Size  Description
 Parent Directory                                  -   
 CS/                          2025-09-08 12:16    -   
 Levenshtein_distance/        2025-09-08 12:16    -   
 RevEng/                      2025-09-08 12:16    -   
 Unix/                        2025-09-08 12:16    -   
 cryptography/                2025-09-08 17:22    -   
 Vim/                         2025-09-20 11:25    -   
 readme.html                  2025-12-23 14:45  387   
 math/                        2025-12-25 15:08    -