I use it. Select the word or object and right click on it. choose UNGROUP. The letters will be separated so that you can cut just one to cut.
On the right tool bar at the top .. see the lines that are different colors ....yellow. pink, blue and green? That is the line color selector.
So example.
If I want to cut SAMMY but only cut the S, I color the S with the line color tool a different color, ant different color line will work as it is only for selecting what to cut.
Then go to the 2nd row of tool icons to the one with the blade holder and gear on it (configure cut job window)
from there, you can chose what color you want to cut. So you will have 2 colors listed there(whatever color you changed the S to, and whatever color the rest of the word is)
make sure the color you want to cut is checked and there you go!!! That is cutting by color selection.
I do this daily, its easy really. That way I can have my entire file open and I can pick and choose what I what to cut when.
I hope this helps.