Hover tooltiptext in Rascal figure

Question

Is it possible to produce a figure in Rascal that shows a tooltiptext during hover? I mean the little yellow thing like the one prescribed by the title attribute of

Answer 1

yes in these slides (http://homepages.cwi.nl/~jurgenv/teaching/evolution1314/slides/intro-visualization.pdf) an example is shown:

FProperty popup(str S){
 return mouseOver(box(text(S), fillColor("lightyellow"),
 grow(1.2),resizable(false)));
}

box(size(50),fillColor("red"), popup("Hello"))