| ::close_all_files | Close all open files. |
| ::close_file | Closing a text file. |
| ::fnew_line | Create a line feed. |
| ::fread_char | Read a character from a text file. |
| ::fread_string | Read strings from a text file. |
| ::fwrite_string | Write values in a text file. |
| ::open_file | Open text file. |