iago is a UI for drawing shapes with the pen. it is built on top of lamp
and can draw circles, rectangles and lines.
iago requires lamp to be installed into /opt/bin/lamp
use genie or ddvk's touchinjector to launch iago.
select a shape to insert, adjust it by dragging its handles and then select 'ok' or 'cancel'.
you can insert more than one shape at a time by selecting a new shape from the dropdown menu
when using genie, you will have to "clear" the touch after iago is launched for the first time. in practice, this means you have to double input tap / swipe gestures. in other words, 3 finger tap becomes 3 finger double tap.