Tablet computers my friend.
Ah yes, the 1200 dollar device doing the action of a 10 dollar device... BRILLIANT!...
That would be why the screens are made of composite materials similar to Lexan.
I used this same format for my most recent show, and it was a ton of work, but well worth it. The end result was a fully-modifiable, fully-legible prompt book that anyone could read (my handwriting is not anything to write home about either) and call from.weight and battery life are a factor that needs to be considered as well.
I do think that typing up your notes is always a good idea. I used to use MS Word and turn on the revisions feature so I could place the cue right where I needed it on the right line of the script. It was extremely handy. It takes a bit of work to make it print with the "prompts" and to color code them, but the advantage is that you have a perfect human-readable text (I'll admit, my handwriting is nothing to ...err... write home about)
(I also make the font a lot larger so it's much easier to read in the dark or find your place if you get distracted for a second)
Perhaps Celtx?I'm trying to find this free software that I saw a couple years back. It allowed you to load a script into it and then add a bunch of notes. They had a library of about 50 public domain scripts that you could choose from. Or you could scan and upload your own. If remember right it was more for the film industry and story boarding, but it could be customized to work in theater. It may have been the link that Kwotipka was talking about above... but I don't see it on that site now.
What a difference four years makes - refurbished wifi-only iPads can be routinely had on Apple's web site for $350 - and with 10 hours of battery life, it would be a marathon production to outlast oneAh yes, the 1200 dollar device doing the action of a 10 dollar device... BRILLIANT!...