Since this is a replacement for the Microsoft Notepad, suggestion is to add the "LOG" feature as documented in the MS Notepad help file:
To append a log to a document
On the first line of a Notepad document, type the following extension at the left margin, making sure you use all uppercase letters and include the period:
On the File menu, click Save.
Every time you open this document, Notepad will append the current time and date to the end of the document, as specified by your computer's clock.