LsD1

Not sure why spacing has got a minus sign

Badly named I think, not sure why spacing has got a minus sign

This reverses the order of the GraphicActive List. Method paints objects to screen as side effect.

Repaints the canvas, takes a Refs collection as parameter.

Repaints the canvas takes repeat parameters of GraphicElem.

Just responds to the position of the mose click on the Panel, ignores any potential active objects on the screen.

Just responds to when the Panel is clicked, ignores the position of the mose click or any potential active objects on the screen.

This function is to create a display that changes over time. So you pass in a function from the time elapsed in milliseconds to the Arr of GraphicElems that you want to display at that time point.

Top right offset from centre.

OK you're probably not noticing much advantage over toString yet except its shorter.

So note how there is a semicolon between the two points but a comma between the x and y values of each point.

The active objects registered with this PanelLike.

This method name is inconsistent with mousedown on the canvas class

This method name is inconsistent with mouseUp on the canvas class