Reply To: calculator keys

Hello, again,
I think I found part of my answer to my question after doing a bit more researching--I will just use standard Nemeth code for the hotkeys. But here is a more specific question regarding the same attachment. On the right-hand column, if you down to the bottom third, there are key sequences starting with CTRL, and then + another key. Since CTRL could be thought of as an abbreviation, should I leave a space before the the + sign? Thank you so much, and I apologize my first post was so general.
Susan