Shaky line drawing on after effects?
 

Guys, I did the video bellow like 15 years ago using a native after effects tool...but I cannot remember what was it. I know it was as simple as selecting the brush size, movement/shakyness intensity, key frames and then just drawing. Does anyone know what affect is that? Since then I´ve never had to use after effects again and now I do. I did a youtube search but all I´ve found was some time consuming tutorials where you actually had to animate the lines after the drawing is done...like I said, the way I did 15 years ago was very simple.