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→Con: crtl-w common close window command
* For people who usually use windows rather than tabs, it's nice to have an easy-to-press shortcut (Ctrl+W) to close the window.
* 1 for the price of 2: If I'm done with the current document, and don't want to open a new one at this time, the proposal creates an additional step that I need to perform: either (a) determine whether multiple tabs are open, to decide whether to close a tab or a window; or (b) after just closing a tab, if a blank useless window remains, close it.
* Most windows apps use crtl-w as a close command, including IE6, making this unintuitive behavior.
==Should this be a preference?==
