Script Frenzy is starting April first. This is sister to National Novel Writing Month (NaNoWriMo). In Script Frenzy you write... (now, I'm going to say something obvious) a script. Or you may write a graphic novel. Now that got my spidey senses tingling.
So I've dug up some info on graphic novel script writing. Here are some sample scripts by Joe Edkin. Here's the script format that Dark Horse Comics uses. I found that here.
There is software that is designed specifically for script writing, though I haven't explored that. I have explored my local library and found some neat books on writing comics and graphic novels. There is apparently a standard jargon used in graphic novel scripting that one must know to signal to to artist and/or colorist what the writer wants.
Anywhoo, I'm still undecided about doing Script Frenzy, but if I do, I think it'll be a graphic novel.