Hi Terry, there isn't currently any method that I can think of for automating that kind of selection.

But maybe it would work easier if instead of just a bunch of individual internal cutting lines if you had rectangles something like this:



That way you could use the rectangles as cutting objects in a boolean difference, and the boolean difference will slice away the pieces contained inside the rectangles like this:




If you didn't want to leave the "side walls" of the rectangles behind, try using Edit > Separate on the "f" letter before hand and don't select the bottom line of it when doing the difference so that the base object for the boolean is an open curve rather than a closed curve. That will then only delete chunks of the open curve rather than trying to form closed regions out of it like will happen when the base object can be auto joined into a closed curve.

- Michael