Yes, please go ahead with improving it

And please post it back.
Here are 2 problems that I've found but not solved, mostly by lack of time:
- After some use, I found that it was better to only annotate on the right margin, because the left margin can be cut, possibly by jarnal.
- Also, the scaling does not work so well when using a5 paper, or half-letter. I think there is some offset/margin that they add in their transform, but I could not find them.
Thanks