I wish there is a dialog box to open a page.
Currently I drag it from the file manager to the preview window, but it is uncomfortable.
I also ask if it is possible to refresh the page only if you are saving the related file.
is currently being updated also for every save action of other non-related tabs.
Thanks :)
Well, I can implement this, but I'm afraid it's hardly useful. It may only be useful for writing static HTML in a single page, which is uncommon (most site either user a server-side programming language -- PHP, Python, etc.) or at least some build process.
Also about only saving when the displayed URL changes it seems even less useful because it wouldn't reload when e.g. a linked CSS changes.
However if you still think it's really useful and all, I can add a item somewhere to display the current document.