Libre Office Help

[joko]

Every time i write something, and decide to edit, the new text overwrites the old text - I have NOT pressed the keyboard insert function but (ever)
but it does it every time!

it must be a setting something but i cant find anything to disable it, and im not totally sure what it would be classed as

can anyone tell me how to turn this off?

Its a very odd think to have as standard!

thanks :)