Node movement with arrow keys

It is possible that after a node is selected(with mouse) to be moved ( in small steps) using arrow keys on keyboard ?

Yes, this is implemented in extensions/DrawCommandHandler.js, used by the sample.

By the way, while i’m playing around with this interesting sample, i find the open function can only list the save files which 've just been saved until that page is reloaded.

When i save as a file with a name “FirstDiagram” and then i reload the page, only the in the file > delete can show “FistDiagram” while the in file>open show nothing. I try to read the code but i can’t find what makes this happen.

Is this just my computer or is anything missing here?

[Later edit:]
Yes, is working fine.

Thanks, I will try it.