Here's a few suggestions that could be cool for the documentation:
Having the Documentation option on the site under Custom Attack lead to here.
In the Combat.md file of documentation, making sure to specify at the top that the middle of the screen is (320, 240) and the total screen size is 640x480.
Under SansSlam in Attacks.md, being sure to mention the directions of each slam (since usually it takes experimentation to figure out that 0 is right, 1 is down, 2 is left, and 3 is up, and would be more convenient for newcomers to custom attacks to not need to experiment.)
Here's a few suggestions that could be cool for the documentation: