f in In the old days, programmers broke up words in their programs by using the_to separate them. You'll still find examples of this in old C code, and in my Yahoo email address. We stopped using the...

f in In the old days, programmers broke up words in their programs by using the_to separate them. You'll still find examples of this in old C code, and in my Yahoo email address. We stopped using the _ because it's off the normal keyboard and hard to make