I was watching PharoDays17: Bloc video and @53:15 there was a question due to offset being negative... https://youtu.be/ikzkzfz0zAA?t=3197 ...and I had a random idea (so not necessarily practical) that since we have "metrics" as an object, I wonder if a built in feature to draw these metrics on the canvas - kind of a developer guidelines to be used temporarily during prototyping. Something like... metrics red drawOn: aCanvas which would be commented out of production code. Now what I'm really interested in is a zoomable image window, preferably using the mouse wheel. Any chance such example if available somewhere? cheers -ben