Personally, I am not a fan of the overwrite mode in text editors and believe it is a relic from the past that has found its way into modern editors. In command line text editors (big time vim fan here), OVR mode can be very useful and efficient but It is hard for me to fathom the use of OVR mode in modern text editors. I believe most of my readers will also share the same sentiment.
There are very easy methods of switching between the two modes (INS and OVR) to match your preference but some users will face an uphill battle in changing between these modes due to hardware and software constraints. In this tutorial I will walk you through a method that will reliably afford you the ability to make this switch in a no frills style.