"forceGen" - mkraska/meclib GitHub Wiki
[ "forceGen", "name", [x,y] ] Interactive force generator. It consists of an input field for the label and a force prototype, which can be dragged to produce new forces. Forces can be deleted by dragging them outside of the canvas.
"name"initial value for the label input field.[x,y]position of the upper left border of the label input field.
see also: "force"
The input field automatically corrects non-valid names (in terms of STACK). Example: MAx -> M_Ax.
Example

[
[ "grid", "x","y", -5,5,-4,5, 50, [10,10], [0,0] ],
[ "forceGen", "name", [2,2] ]
]