Information technology

LibreOffice Writer 

https://www.libreoffice.org/

https://documentation.libreoffice.org/en/english-documentation/

https://documentation.libreoffice.org/assets/Uploads/Documentation/en/WG71/WG71-WriterGuide.pdf

1. Special characters
2. Mathematical formulas
   
3. Find and Replace
   
4. Footnotes and endnotes
   
5. Spelling and grammar
   
6. Templates in a word processor
7. Saving options (save with password, autosave)