But now, I want to test it as if I were NOT at home, so I DELETED Station Mode Name and Pass in [SETTINGS] and SAVED, and then tried many other things, including UPDATE and RESTART - (but I did not press FORMAT, since I don't know what this would do and did not want to lose all my programs!).
But try as I might - including pressing the RESET button, DISCONNECTING POWER from my nodemcu - even though the [SETTINGS] page is completely blank (except for "Server listening port 80") and did not show my network SSID and password, using many tries of many combinations of button pressing, it STILL ALWAYS CONNECTS TO MY NETWORK AUTOMATICALLY, as if it remembers its name and password!
How can I make it FORGET ABOUT MY NETWORK INFORMATION?
(Also would like to understand the difference, in [SETTINGS], between SAVE, FORMAT, UPDATE and RESTART?