Hi Ioan, thanks for the question. This release supports some basic editing but it's mostly meant for "one-liner" edits so you can fix small bugs while debugging without having to switch back to the tabbed editor. The support is experimental and
wasn't the primary focus of the power tool so it may have bugs, but you can enable it in the Tools -> Options -> Debugger -> Debugger Canvas dialog.
We hope to expand the scope of the canvas experience to more areas in the future but we don't have any concrete plans that we can share as of yet. If you have more ideas of what you'd like to see supported then please continue to let us know.
Thanks!
Kael Rowan | Research Software Design Engineer | Human Interactions in Programming | Microsoft Research