Right, I've recently been playing around with tab closing in MP 0.33 and have also looked at the Settings>Interface , and have come to these conclusions:
1. There could be a new tab after 'Interface' called 'Tabs' in which here there would be all the settings for tabs. This would probably be better.
2. I would like to configure the behaviour of when closing the last tab (in viewer). Currently in XnView MP v0.33 when I close the last file's tab (image file, Viewer) it then restorts to Browser mode when actually i would like to configure it to go to an <Empty> tab instead.
3. I would like to configure the behaviour of when closing the first tab (in viewer) - first opened tab within a bunch of other opened tabs. Currently if I have 3 image files opened (3 tabs) in MP and I close the first tab then this first tab would resort to a synch'd Browser mode even when I have disabled the setting 'synchronize Browser when view is closed'.
What I propose for the above requests 2,3 is space for a drop-down menu just like how in my Opera 10.01 preferences window does it for tab settings like this;

So the drop-down menu choices for MP in the settings for tab closing would be these:
Browser
Next tab
Last active tab
<Empty> tab
I have made a mock-screenshot of everything that I have just explained above, kinda a visual summary of how it would all look like, look at this;

same link
Note: have renamed 'closing last tab exits xnview' to something slightly similar and accurate with the newer 'closing browser exits xnview (when no other tabs left)'.
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a second closer look (click to enlarge)

These below links of other requests are related to this topic (form part of this topic) too, so check them out;
http://newsgroup.xnview.com/viewtopic.php?f=60&t=21413
http://newsgroup.xnview.com/viewtopic.php?f=60&t=21039
http://newsgroup.xnview.com/viewtopic.php?f=60&t=21395
Thank you for reading
