getting character at specific location

all it is saying, is just a function to get a character at a location.
example:

term.getCharacter(x,y)

if there is no character there, it will return nil or " "
this is just to make it easier to get a character for something like taking screenshots

The "simple" way for you to get yourself this is to make a copy of the window API's code, and then just add the function into the window-defining section:

    function window.getCharacter( x, y )
        local tLine = tLines[ y ]
        return tLine.text:sub(x, x), tLine.textColor:sub(x, x), tLine.backgroundColor:sub(x, x)
    end