In addition, you should create a LISP routine that loads automatically when starting AutoCAD.
Create a new .lsp file as shown above:
; Displays the Properties Palette when opening or creating a new drawing
(command "properties")
Type APPLOAD to display the Load/Unload Application dialog box.
Click on the Contents... button under Startup Suite.
Then click on Add..., select the .lsp file and finally click on Close twice.
Hereafter the routine will run whenever you open or create a new drawing.
Thank you, @fatal.error. That brings up Object Properties not Drawing Properties (...where I can leave small pertinent messages to my future self for the next time I open that drawing), but I think this looks like the correct track...