Maybe it's more natural to have 'cancel' button in the edit view?

[yy]

If you want to cancel your edit and go back to the page, the only way is browser back button, which you need to use several times if you clicked the editor taps. (view=edit#plain -> view=edit#struct -> view=edit => original page)

I think it may be better to have a cancel button that brings you back to the page.

[jangxyz]

+1