You type it on your computer, erm, say er, or erm, or other hesitation markers, that you will predict will mark hesitation, and on your scr you type this on the keyboard, and on your screen, you will get a whole list of  places where this is used with the beginning bit of the sentence, and the end bit of the sentence, and all the ers will be listed down the middle of the screen, with the line numbers, here, so you can check back to where it comes from.