1. Open a blank Notepad file
2. Write .LOG as the first line of the file, followed by a enter. Save
the file and close it.
3. Double-click the file to open it and notice that Notepad appends the
current date and time to the end of the file and places the cursor on
the line after.
4. Type your notes and then save and close the file.

After that open the file and see the changes.