I am happy and thankful to get your help so promptly. But, alas, in my computer (with Windows 10 as the OS) in the "Windows features" list there is no snipping tool.
But I have it very much though with the 'selecting frame' disabled.
That means W10 does not allow the feature snipping tool to work. This is one shortcoming of W10. I have noticed another. That is with its movie maker. It does not allow any other language than English to write on the movie you are going to make with MM.
This is shortcoming number TWO of W10.
My best wishes and with many ,many thanks for the reply