Larry used to write his scripts in longhand on legal pads with black Sharpies. Rarely would he have cross-outs. It was like Mozart.
The next day Larry came in and gave me a Xerox copy of his handwritten original draft. From legal pad to air, the script remained virtually the same.
Wanna see what a Larry Gelbart script looks like? I was able to scan a page. This will give you some idea. If I scanned a page of my handwritten scripts, even I wouldn't be able to decipher it. There'd be arrows, lines in the margins, cross-outs throughout, sometimes arrows to other pages. But Larry's were clean, legible, and damn near perfect.
So here it is... literally from the PEN of the master -- Larry Gelbart. Enjoy.