Free Office for Windows problem

[king1]

I am running Textmaker which is the free version of Microsoft Office.

It usually runs fairly well, but today I have struck a problem with the editing. If I want to insert some text in the middle of a sentence, for example, as I type it deletes the text after it, which makes editing impossible.

I am hoping that someone can tell me how to correct that.

Thanks in anticipation.

That would probably be the 'Insert' button on the keyboard, basically turns on or off the ability to insert in favour of overwrite...

Usually around the delete button somewhere