>>Perhaps when code is shared between many people things like that could be of importance.
>>For me (myself & I) this does not create any confusion, since variable 'ok' is one and only throughout all code.
>>It is always local and it is always called the same way. I do like/use hungarian notation, but this is an exception done purposely.
>
>I save (old) settings in local variables named oldDele, oldSele, etc. So they do not conform to the naming convention. Shame on me?

You have just defined a naming convention. As long as you stick to it, I don't see anything wrong.