When manually aligning canvas using left/right up/down arrows, currently pivot point remains fixed at the centre of canvas.
This is fine when the canvas is small, but is a problem for large canvases, when you zoom in, to align particular feature away from the centre of canvas.
Zooming in causes the pivot point to move outside of visible screen area, making it impossible to use.
Suggestion is that pivot point for "Edit Canvas" command should be re-positionable to wherever necessary for the job in the manner similar to "Move" command.
See discussion on the forum:
http://forums.autodesk.com/t5/design-validate-document/editing-canvas/td-p/6683101